CN110103721A - Braking method and entire car controller - Google Patents
Braking method and entire car controller Download PDFInfo
- Publication number
- CN110103721A CN110103721A CN201910588334.8A CN201910588334A CN110103721A CN 110103721 A CN110103721 A CN 110103721A CN 201910588334 A CN201910588334 A CN 201910588334A CN 110103721 A CN110103721 A CN 110103721A
- Authority
- CN
- China
- Prior art keywords
- revolving speed
- clutch
- braking
- flywheel
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D61/00—Brakes with means for making the energy absorbed available for use
Abstract
This application provides a kind of braking method and entire car controller, the braking method is applied in entire car controller, and entire car controller is for controlling brake apparatus, wherein brake apparatus includes the first clutch and flywheel being connected with the transmission shaft of vehicle；The braking method includes: the revolving speed of the revolving speed and flywheel that obtain transmission shaft；It is combination degree corresponding with the braking requirement torque of brake apparatus by the combination degree control of first clutch if the revolving speed of transmission shaft is greater than the revolving speed of flywheel.Since the application is when the revolving speed of transmission shaft is greater than Speed of Reaction Wheels, it is combination degree corresponding with the braking requirement torque of brake apparatus by the combination degree control of first clutch, and then can store the kinetic energy on transmission shaft to flywheel by first clutch, by flywheel by Brake energy recovery.Compared with prior art, the process for recycling braking energy is not limited by battery technology, and more braking energies can be recycled, increase brake force.
Description
Technical field
The present invention relates to field of electromechanical technology more particularly to a kind of braking methods and entire car controller.
Background technique
New-energy automobile refers to the automobile using unconventional vehicle fuel as a source of power, mainly includes pure electric vehicle vapour
Vehicle, hybrid vehicle etc..As the development of new-energy automobile the relevant technologies is more and more mature, the user of new-energy automobile is used
It is more and more.In particular by the new-energy automobile of electric power as a source of power, such as pure electric automobile, hybrid vehicle
Deng next relative to other kinds of new-energy automobile using the user of this kind of new-energy automobile due to the relatively simple maturation of technology
It says more.
However, due to the limitation of battery technology in the prior art, pure electric automobile, hybrid vehicle etc. using electric power as
The energy that the new-energy automobile of power resources is recycled in braking is lower.Specifically, the new energy with electric power as a source of power
In braking, can convert electric energy for the kinetic energy generated when braking by traction electric machine (Traction Motor, TM) is automobile
Battery charging.But the size for the charging current that in the prior art, battery is able to bear has certain limitations, and causes battery that can recycle
Braking energy it is lower, and then cause the electric braking force being converted to by electric power relatively low.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, present applicant proposes a kind of braking method and entire car controllers, to realize back
Receive more braking energies.
To solve the above problems, the scheme now proposed is as follows:
First aspect present invention discloses a kind of braking method, is applied in entire car controller, and the entire car controller is for controlling
Brake apparatus processed, wherein the brake apparatus includes the first clutch being connected with the transmission shaft of vehicle and with described first
The connected flywheel of clutch；The braking method includes:
Obtain the revolving speed of the transmission shaft and the revolving speed of the flywheel；
If the revolving speed of the transmission shaft is greater than the revolving speed of the flywheel, by the control of the combination degree of the first clutch for
The corresponding combination degree of braking requirement torque of the brake apparatus；Wherein, the braking requirement torque of the brake apparatus is
The torque of the brake apparatus transmitting is needed when braking.
Optionally, in above-mentioned braking method, the brake apparatus further include: respectively with the transmission shaft and the flywheel
Connected second clutch and the gear set being connected respectively with the first clutch and the flywheel；The gear set
Rotating ratio is i, and i is the number greater than 1；
Wherein, if the revolving speed of the transmission shaft is greater than the revolving speed of the flywheel, by the combination journey of the first clutch
Degree control is combination degree corresponding with the braking requirement torque of the brake apparatus, comprising:
If the revolving speed of the transmission shaft is greater than the revolving speed and the revolving speed of the transmission shaft and the revolving speed of the flywheel of the flywheel
Ratio is greater than i, then is the braking requirement moment of torsion pair with the brake apparatus by the combination degree control of the first clutch
The combination degree answered, and be 0 by the control of the combination degree of the second clutch；
If the revolving speed of the transmission shaft is greater than the revolving speed and the revolving speed of the transmission shaft and the revolving speed of the flywheel of the flywheel
Ratio is less than i, then is the braking requirement moment of torsion pair with the brake apparatus by the combination degree control of the second clutch
The combination degree answered, and be 0 by the control of the combination degree of the first clutch.
Optionally, in above-mentioned braking method, further includes:
If the revolving speed of the transmission shaft is less than the revolving speed of the flywheel, by the control of the combination degree of the first clutch for
The corresponding combination degree of driving demand torque of the brake apparatus；Wherein, the driving demand torque of the brake apparatus is
Accelerate the torque that the brake apparatus transmitting is needed when driving.
Optionally, in above-mentioned braking method, further includes:
If the revolving speed of the transmission shaft is less than the revolving speed and the revolving speed of the flywheel and the revolving speed of the transmission shaft of the flywheel
Ratio is greater than i, then is opposite with the driving demand torque of the brake apparatus by the combination degree control of the first clutch
The combination degree answered, and be 0 by the control of the combination degree of the second clutch；Wherein, the driving demand of the brake apparatus
Torque is the torque for accelerating to need the brake apparatus transmitting when driving；
If the revolving speed of the transmission shaft is less than the revolving speed and the revolving speed of the flywheel and the revolving speed of the transmission shaft of the flywheel
Ratio is less than i, then is opposite with the driving demand torque of the brake apparatus by the combination degree control of the second clutch
The combination degree answered, and be 0 by the control of the combination degree of the first clutch.
Optionally, in above-mentioned braking method, the calculating process of the braking requirement torque of the brake apparatus, comprising:
Obtain the braking requirement torque of user；
Judge the peak torque produced when whether the braking requirement torque of the user is greater than motor braking；
If the braking requirement torque of the user is greater than peak torque producible when the motor braking, by the user's
The difference of producible peak torque when braking requirement torque and the motor braking, the braking for being determined as the brake apparatus need
Seek torque.
Second aspect of the present invention discloses a kind of entire car controller, and the entire car controller is used to control brake apparatus,
In, the brake apparatus includes the first clutch being connected with the transmission shaft of vehicle and is connected with the first clutch
Flywheel；The entire car controller includes:
First acquisition unit, for obtaining the revolving speed of the transmission shaft and the revolving speed of the flywheel；
First control unit, if being greater than the revolving speed of the flywheel for the revolving speed of the transmission shaft, by the first clutch
Combination degree control be combination degree corresponding with the braking requirement torque of the brake apparatus；Wherein, the braking dress
The braking requirement torque set is the torque that the brake apparatus transmitting is needed when braking.
Optionally, in above-mentioned entire car controller, the brake apparatus further include: respectively with the transmission shaft and it is described fly
Gear set wheel connected second clutch and be connected respectively with the first clutch and the flywheel；The gear set
Rotating ratio be i, i is number greater than 1；
Wherein, the first control unit, comprising:
First control subelement, if the revolving speed for the transmission shaft is greater than the revolving speed of the flywheel and turn of the transmission shaft
The fast ratio with the revolving speed of the flywheel is greater than i, then is to fill with the braking by the combination degree control of the first clutch
The corresponding combination degree of braking requirement torque set, and be 0 by the control of the combination degree of the second clutch；
Second control subelement, if the revolving speed for the transmission shaft is greater than the revolving speed of the flywheel and turn of the transmission shaft
The fast ratio with the revolving speed of the flywheel is less than i, then is to fill with the braking by the combination degree control of the second clutch
The corresponding combination degree of braking requirement torque set, and be 0 by the control of the combination degree of the first clutch.
Optionally, in above-mentioned entire car controller, further includes:
Second control unit, if being less than the revolving speed of the flywheel for the revolving speed of the transmission shaft, by the first clutch
Combination degree control be combination degree corresponding with the driving demand torque of the brake apparatus；Wherein, the braking dress
The driving demand torque set is the torque for accelerating to need the brake apparatus transmitting when driving.
Optionally, in above-mentioned entire car controller, further includes:
Third controls subelement, if the revolving speed for the transmission shaft is less than the revolving speed of the flywheel and the revolving speed of the flywheel
It is greater than i with the ratio of the revolving speed of the transmission shaft, then is to be filled with the braking by the combination degree control of the first clutch
The corresponding combination degree of driving demand torque set, and be 0 by the control of the combination degree of the second clutch；Wherein, institute
The driving demand torque for stating brake apparatus is the torque for accelerating to need the brake apparatus transmitting when driving；
4th control subelement, if the revolving speed for the transmission shaft is less than the revolving speed of the flywheel and the revolving speed of the flywheel
It is less than i with the ratio of the revolving speed of the transmission shaft, then is to be filled with the braking by the combination degree control of the second clutch
The corresponding combination degree of driving demand torque set, and be 0 by the control of the combination degree of the first clutch.
Optionally, in above-mentioned entire car controller, further includes:
Second acquisition unit, for obtaining the braking requirement torque of user；
Judging unit, the maximum torsion produced when for judging whether the braking requirement torque of the user is greater than motor braking
Square；
Determination unit, if the braking requirement torque for the user is greater than peak torque producible when the motor braking,
The difference of producible peak torque, is determined as the system when then by the braking requirement torque of the user and the motor braking
The braking requirement torque of dynamic device.
It can be seen from the above technical proposal that braking method provided by the present application is applied in entire car controller, vehicle control
Device processed is for controlling brake apparatus, wherein brake apparatus includes the first clutch being connected with the transmission shaft of vehicle and with the
The connected flywheel of one clutch.When the revolving speed of transmission shaft is greater than Speed of Reaction Wheels, entire car controller can be by first clutch
Combination degree control is combination degree corresponding with the braking requirement torque of brake apparatus, and then can will be moved on transmission shaft
It can be stored by first clutch to the flywheel being connected with first clutch, by flywheel by Brake energy recovery, realize system
Dynamic effect.Compared with prior art, the process for recycling braking energy is not limited by battery technology, the recyclable more systems of brake apparatus
Energy increases brake force.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of braking system disclosed by the embodiments of the present invention；
Fig. 2 is a kind of flow diagram of braking method disclosed by the embodiments of the present invention；
Fig. 3 is a kind of structural schematic diagram of brake apparatus disclosed by the embodiments of the present invention；
Fig. 4 is a kind of flow diagram of the calculation method of the braking requirement torque of brake apparatus disclosed by the embodiments of the present invention；
Fig. 5 is the flow diagram of another braking method disclosed by the embodiments of the present invention；
Fig. 6 is the structural schematic diagram of another brake apparatus disclosed by the embodiments of the present invention；
Fig. 7 is a kind of structural schematic diagram of entire car controller disclosed by the embodiments of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Refering to fig. 1, the embodiment of the present application discloses a kind of braking system 100, including entire car controller 101 and braking dress
Set 102.
The braking energy that braking system 100 provided by the embodiments of the present application generates when, it can be achieved that recycling vehicle braking is vehicle
Braking provide brake force.Wherein, entire car controller 101 passes through controller local area network (Controller Area
Network, CAN) bus and brake apparatus 102 realize and communicate to connect.It include being connected in brake apparatus 102 with the transmission shaft of vehicle
First clutch and the flywheel that is connected with first clutch.Entire car controller 101 makes to make by control brake apparatus 102
When the vehicle is braked, the kinetic energy on vehicular transmission shaft is stored by first clutch to flywheel for dynamic device 102, realizes recycling
Braking energy and realization braking.It should be noted that braking system 100 provided by the embodiments of the present application can be applied not only to
In new energy vehicle, apply also in the vehicles such as diesel vehicle, gasoline car.
Specifically, it is carried out individually below by the process that several embodiments control brake apparatus 102 to entire car controller 101
Explanation.
Refering to Fig. 2, the embodiment of the present application discloses a kind of braking method.Fig. 2 shows braking method be applied to vehicle control
In device processed, entire car controller is for the brake apparatus 300 shown in control figure 3.Brake apparatus 300 includes the transmission shaft with vehicle
307 connected first clutches 301 and the flywheel 302 being connected with first clutch 301.Specifically, Fig. 2 shows braking
Method, comprising the following steps:
The revolving speed of S201, the revolving speed for obtaining transmission shaft and flywheel.
Refering to Fig. 3, engine 306 and integral type starter motor and generator (Integrated Starter and
Generator, ISG) 305 generation torques act on transmission shaft 307, make transmission shaft 307 obtain kinetic energy, have revolving speed.And fly
For the revolving speed of wheel 302 when most starting vehicle and not braked, revolving speed is almost 0, i.e., without the energy generated when recycling braking, because
This is also without revolving speed.Wherein, for entire car controller when executing step S201, the revolving speed of revolving speed and flywheel to transmission shaft is real
When be acquired.
It should be noted that first clutch 301, which can be regarded as, regards two parts as.A part of first clutch 301 with
Transmission shaft 307 connects, and another part then connect with flywheel 302, and flywheel 302 is not directly connected to transmission shaft 307, when first from
When in conjunction with the part and the part connected with flywheel 302 being connected in clutch 301 with transmission shaft 307, flywheel 302 and transmission shaft
Kinetic energy between 307 can be transmitted by first clutch 301.Wherein, 301 two parts of first clutch, which are combined, is
One progressive process, specifically with the embodiment of this parameter of combination degree C1.When the combination degree of first clutch 301 is 1, meaning
Connect the part of transmission shaft 307 and the part of connection flywheel 302 in first clutch 301 and be completely combined, the first clutch at this time
The transferable torque of device 301 is maximum.And the combination degree of first clutch 301 be 0 when, it is meant that connect in first clutch 301
The part of the part and connection flywheel 302 that connect transmission shaft 307 is completely disengaged, and the transferable torque of first clutch 301 is at this time
0。
It should also be noted that, the kinetic energy on flywheel 302 is embodied in the form of 302 revolving speed of flywheel, stored on flywheel 302
Kinetic energy is more, and the revolving speed of flywheel 302 is higher.Similarly, the kinetic energy on transmission shaft 307 is more, and the revolving speed of transmission shaft 307 is got over
It is high.
S202, judge whether the revolving speed of transmission shaft is greater than the revolving speed of flywheel.
If rotating speed of transmission shaft is greater than Speed of Reaction Wheels, S203 is thened follow the steps.If rotating speed of transmission shaft is less than Speed of Reaction Wheels, say
The kinetic energy of bright transmission shaft itself is lower than the kinetic energy of flywheel storage, and kinetic energy can only be transmitted from high toward lower, therefore turns in transmission shaft
When speed is less than Speed of Reaction Wheels, entire car controller is unable to control brake apparatus and realizes braking process, therefore entire car controller terminates pair
The control for brake of brake apparatus.
Optionally, in one specific embodiment of the application, after executing the step S202, if can also include: transmission shaft
Revolving speed be less than the revolving speed of flywheel, then be the driving demand torque phase with brake apparatus by the control of the combination degree of first clutch
Corresponding combination degree.
Wherein, the driving demand torque of brake apparatus is the torque for accelerating that brake apparatus is needed to transmit when driving.Braking dress
The driving demand torque set is calculated by the driving operational order of user.
Specifically, when the revolving speed of transmission shaft is less than the revolving speed of flywheel, i.e. the kinetic energy of flywheel storage is higher than transmission shaft, and user
When having input driving operational order to vehicle, braking dress is calculated according to the driving demand torque of user in brake monitor
The driving demand torque set, it is corresponding with the driving demand torque of brake apparatus according to the determination of the driving demand torque of brake apparatus
Combination degree, and by the combination degree of first clutch control be combination corresponding with the driving demand torque of brake apparatus
Degree.It is connected at this point, flywheel is realized by first clutch and transmission shaft, the kinetic energy stored on flywheel is transferred to transmission shaft
On, realize the effect of driving.
It should be noted that the driving operational order of user can be the power for applying driving pedal, it is also possible to controlling
The correlation values etc. of input driving force in interface processed.There are many concrete form of the driving operational order of user, including but not limited to originally
Apply for the part that embodiment proposes.The driving demand of user can be calculated according to the driving operational order of user for entire car controller
Torque.And according to the driving demand torque of user, the driving demand torque of brake apparatus is calculated.
Optionally, the driving demand torque of brake apparatus can be equal to the driving demand torque of user, can also be equal to and use
The difference of the greatest requirements torque of the driving demand torque and other driving methods at family.Such as motor driven, fuel oil driving etc..System
The specific value of the driving demand torque of dynamic device, depending on preferentially being driven using which kind of mode in actual conditions.
S203, the combination degree of first clutch is controlled as combination corresponding with the braking requirement torque of brake apparatus
Degree.
Wherein, the braking requirement torque of brake apparatus is the torque for needing brake apparatus to transmit when braking.First clutch
Combination degree and the transferable torque of first clutch have corresponding relationship, be a value range be 0 ~ 1 parameter value.The
As soon as the combination degree of clutch is bigger, then the transferable torque of first clutch is bigger.Related first clutch combination degree
Specific explanations shown in the first clutch relevant portion of step S201, details are not described herein again.
Entire car controller can according to need first clutch transmitting torque value, calculate need control first from
The value of the combination degree of clutch.And the braking requirement torque of brake apparatus is the torque for needing first clutch to transmit, therefore
The combination degree of corresponding first clutch can be calculated according to the braking requirement torque of brake apparatus for entire car controller, into
And the combination degree of first clutch can be controlled the corresponding combination of braking requirement torque for brake apparatus by entire car controller
Degree.
Specifically, the brake operating instruction that user applies is converted to the braking requirement torque of user.Entire car controller is logical
The braking requirement torquemeter for crossing collected user calculates the torque for needing per-vehicle equipment to transmit when braking, that is, calculates braking dress
The braking requirement torque set.Entire car controller controls the combination of first clutch further according to the braking requirement torque of brake apparatus
Degree, i.e. execution step S203.It should be noted that the braking requirement torque of user is defeated by the brake operating instruction of user
Enter, the brake operating instruction of user can be the power that user applies to brake pedal, be also possible to user directly on control circle
Required brake force etc. is inputted on the touch screen in face, there are many mode of operation that user provides itself required brake force, including but not
It is limited to the part of the embodiment of the present application proposition.
Refering to Fig. 4, optionally, in one specific embodiment of the application, the calculating of the braking requirement torque of brake apparatus
Journey, comprising:
S401, the braking requirement torque for obtaining user.
The braking requirement torque of user is user's torque required when controlling vehicle braking.Specifically, by full-vehicle control
The brake operating instruction that device is inputted by user is acquired.
S402, judge the peak torque produced when whether the braking requirement torque of user is greater than motor braking.
Wherein, the peak torque produced when motor braking is mainly obtained by the parameter of electric machine.If the braking requirement of user
Torque is less than peak torque producible when motor braking, then entire car controller is only with electrodynamic, without using braking dress
Set and braked, i.e., do not execute Fig. 2 shows step S203, first clutch is not controlled.Specifically, refering to Fig. 3, electricity
The dynamic detailed process of mechanism is that TM motor 303 generates torque using electric energy before this and acts on transmission shaft 307, generates electric system
Power makes vehicle braking, and then TM motor 303 reabsorbs the kinetic energy that braking generates, and kinetic energy is converted to electric energy as battery charging.
If the braking requirement torque of user is greater than peak torque producible when motor braking, illustrate that motor braking is not enough to
Meet the braking requirement of user, therefore also need to be braked using control device, then needs to be implemented step S403.
S403, by the difference of the braking requirement torque of user and producible peak torque when motor braking, be determined as making
The braking requirement torque of dynamic device.
Entire car controller preferentially uses motor to be braked, when motor braking is unable to satisfy the braking requirement of user, just
The difference of producible peak torque when by the braking requirement torque of user and motor braking, the braking for being determined as brake apparatus need
Seek torque, and according to the braking requirement torque of the step S403 brake apparatus determined, execute Fig. 2 shows step S203.
Optionally, if the transferable peak torque of brake apparatus be less than brake apparatus braking requirement torque, i.e., motor with
And brake apparatus producible braking torque is when being still unable to satisfy the braking requirement of user,
The difference of the braking requirement torque of brake apparatus and the transferable peak torque of brake apparatus can be determined as mechanical braking
Demand torque, and according to mechanical braking demand torque, it controls mechanical braking system and is braked.
In the embodiment of the present application, when motor braking is unable to satisfy the braking requirement of user, using brake apparatus and electricity
Machine is braked, and when motor and the producible braking of brake apparatus are still unable to satisfy the braking requirement of user, it can be with
It is braked again using mechanical braking system.It should be noted that in practical applications, can also preferentially using brake apparatus braking or
Mechanical brake device braking, is specifically preferentially braked and can be artificially configured using which kind of mode, do not influence the embodiment of the present application
Realization.If preferentially being braked using brake apparatus, the braking that the braking requirement torque of user is equal to brake apparatus is needed
Torque is sought, if the transferable peak torque of brake apparatus is less than the braking requirement torque of user, adds motor braking or machine
Tool braking.
Therefore, the calculating process of the braking requirement torque of brake apparatus includes but are not limited to the embodiment shown in Fig. 4,
The value of the braking requirement torque of brake apparatus is preferentially braked and is determined using any mode according in actual conditions.
With continued reference to Fig. 2, it should be noted that when the revolving speed of transmission shaft is greater than the revolving speed of flywheel, and user has input system
After dynamic operational order, step S203 just can be performed.After executing step S203, since rotating speed of transmission shaft is higher than the revolving speed of flywheel, because
, in the case where the combination degree value of first clutch is not 0, the kinetic energy on transmission shaft can store to flywheel for this, first from
The combination degree of clutch is higher, and the kinetic energy that transmission shaft can reach on flywheel is more.Therefore the combination degree of first clutch is
According to the braking requirement torque setting of brake apparatus.Compared with prior art, the process of flywheel recycling braking energy is not by electricity
Pool technology limitation, can be recycled more braking energies, and since flywheel absorbs the kinetic energy on transmission shaft, the kinetic energy on transmission shaft
It reduces, realizes braking effect, be equivalent to flywheel to transmission shaft and be applied with brake force.
Braking method provided by the embodiments of the present application is applied in entire car controller, and entire car controller is for controlling braking dress
It sets, wherein brake apparatus includes the first clutch being connected with the transmission shaft of vehicle and is connected with first clutch winged
Wheel.When the revolving speed of transmission shaft be greater than Speed of Reaction Wheels when, entire car controller can by the combination degree of first clutch control for
The corresponding combination degree of braking requirement torque of brake apparatus, and then the kinetic energy on transmission shaft can be passed through into first clutch
It stores to the flywheel being connected with first clutch, by flywheel by Brake energy recovery, realizes braking effect.With the prior art
It compares, the process for recycling braking energy is not limited by battery technology, and more braking energies can be recycled in brake apparatus, increases braking
Power.
Refering to Fig. 5, the embodiment of the present application discloses another braking method, is applied in entire car controller, full-vehicle control
Device is for the brake apparatus 600 shown in control figure 6.Wherein, brake apparatus 600 includes to be connected with the transmission shaft 605 of vehicle
One clutch 601, the flywheel 602 being connected with first clutch 601, be connected respectively with transmission shaft 605 and flywheel 602 second from
Clutch 603 and the gear set 604 being connected respectively with first clutch 601 and flywheel 602.The rotating ratio of gear set 604 is i,
I is the number greater than 1.Specifically, the braking method shown in Fig. 5 the following steps are included:
The revolving speed of S501, the revolving speed for obtaining transmission shaft and flywheel.
S501 is identical as the implementation procedure of the S201 in Fig. 2 and principle herein, and which is not described herein again.
S502, judge whether the revolving speed of transmission shaft is greater than the revolving speed of flywheel.
If the revolving speed of transmission shaft is greater than the revolving speed of flywheel, S503 is thened follow the steps.If the revolving speed of transmission shaft is less than flywheel
Revolving speed thens follow the steps S506.
S502 is identical as the implementation procedure of the S202 in Fig. 2 and principle herein, and which is not described herein again.
Whether the ratio of the revolving speed of S503, the revolving speed for judging transmission shaft and flywheel is greater than i.
Wherein, i is the rotating ratio of the brake apparatus middle gear group 604 shown in Fig. 6, can be artificially configured.Gear set 604
Rotating ratio i mainly consider the factors such as flywheel efficiency, material ability to bear in specific design.Respectively with first clutch 601
The gear set 604 being connected with flywheel 602 primarily serves the speed difference effect reduced between flywheel 602 and transmission shaft 605.For example, working as i
When=4, if make in first clutch 601 connect transmission shaft part with connection flywheel part combine when, flywheel with biography
The rotating ratio of moving axis is changing to i.
Therefore, when the ratio for judging the revolving speed of revolving speed and flywheel of transmission shaft is greater than i, then entire car controller just needs
The first clutch being connected with gear set is enabled, step S504 is executed, so that the rotating ratio between transmission shaft and flywheel is reduced to i.
And when the ratio of the revolving speed of transmission shaft and the revolving speed of flywheel is less than i, then second clutch is enabled, step S505 is executed.
S504, the combination degree of first clutch is controlled as combination corresponding with the braking requirement torque of brake apparatus
Degree, and be 0 by the control of the combination degree of second clutch.
Entire car controller only enables first clutch and is combined, and is combined without enabling second clutch, i.e., the
The combination degree control of two clutches is 0, and the kinetic energy on transmission shaft is reached on flywheel by first clutch, is deposited by flywheel
Storage.And first clutch combine when, due between first clutch and flywheel there are rotating ratio be i gear set, transmission shaft and fly
The rotating ratio of wheel is reduced to i, so that the revolving speed of flywheel will not increase excessively suddenly.The tool of first clutch is controlled in step S504
Body implementation procedure and principle are identical as step S203 in Fig. 2 embodiment, and details are not described herein again.
S505, the combination degree of second clutch is controlled as combination corresponding with the braking requirement torque of brake apparatus
Degree, and be 0 by the control of the combination degree of first clutch.
When executing step S505, entire car controller only enables second clutch and is combined, without enabling first clutch
It is combined.The rotating ratio of transmission shaft and flywheel is less than i when due to executing step S505, and transmission shaft is compared with the revolving speed of flywheel
It is low, within the ability to bear of flywheel material, therefore do not need gear set reduce speed ratio, can enable second clutch without the use of
The first clutch being connected with gear set.First clutch and second clutch are used alternatingly, and can extend clutch uses the longevity
Life.
The implementation procedure and principle of step S505 is identical as step S504, and what is only enabled is second clutch, without
It is first clutch, therefore also repeats no more herein.
Whether the ratio of the revolving speed of S506, the revolving speed for judging flywheel and transmission shaft is greater than i.
When the ratio for judging the revolving speed of revolving speed and transmission shaft of flywheel is greater than i, then entire car controller just needs to enable
The first clutch being connected with gear set executes step S507, so that the rotating ratio of flywheel and transmission between centers is reduced to i.And work as
When the ratio of the revolving speed of the revolving speed and transmission shaft of flywheel is less than i, then second clutch is enabled, executes step S508.
S507, the combination degree of first clutch is controlled as combination corresponding with the driving demand torque of brake apparatus
Degree, and be 0 by the control of the combination degree of second clutch.
Wherein, the driving demand torque of brake apparatus is the torque for accelerating that brake apparatus is needed to transmit when driving.Braking dress
The driving demand torque set is calculated by the driving operational order of user.
Entire car controller only enables first clutch and is combined, and is combined without enabling second clutch, i.e., the
The combination degree control of two clutches is 0, and the kinetic energy on flywheel is reached on transmission shaft by first clutch, so that vehicle generates
Driving force.And first clutch combine when, due between first clutch and flywheel there are rotating ratio be i gear set, flywheel with
The rotating ratio of transmission shaft is reduced to i, so that the revolving speed of transmission shaft will not increase too much suddenly.Control first in step S507 from
The detailed process and principle of clutch can be found in corresponding part in above-described embodiment, and details are not described herein again.
S508, the combination degree of second clutch is controlled as combination corresponding with the driving demand torque of brake apparatus
Degree, and be 0 by the control of the combination degree of first clutch.
When executing step S508, entire car controller only enables second clutch and is combined, without enabling first clutch
It is combined.First clutch and second clutch are used alternatingly, the service life of clutch is extended.
The implementation procedure and principle of step S508 is identical as step S507, and what is only enabled is second clutch, without
It is first clutch, therefore also repeats no more herein.
In braking method disclosed in the embodiment of the present application, since gear set can reduce the rotating ratio of transmission shaft and flywheel, because
This is only enabled when the ratio that the revolving speed of transmission shaft is greater than the revolving speed of the revolving speed of flywheel and the revolving speed and flywheel of transmission shaft is greater than i
The first clutch being connected with gear set is without enabling second clutch.When may make vehicle braking in this way, transmission shaft and flywheel
Rotating ratio be reduced to i so that the revolving speed of flywheel will not increase too much suddenly.When rotating speed of transmission shaft be greater than flywheel revolving speed and
When the ratio of the revolving speed of the revolving speed and flywheel of transmission shaft is less than i, second clutch is only enabled.Braking when to first clutch with
Second clutch is used alternatingly, and can extend the service life of first clutch and second clutch, plays protection to clutch and makees
With.Likewise, when the revolving speed of transmission shaft is less than the revolving speed of flywheel and the ratio of the revolving speed of the revolving speed and transmission shaft of flywheel greater than i
When, first clutch is only enabled without enabling second clutch.When may make vehicle traction in this way, the revolving speed of flywheel and transmission shaft
Than being reduced to i, so that the revolving speed of transmission shaft will not increase too much suddenly.When the revolving speed of transmission shaft is less than the revolving speed of flywheel and flies
The ratio of the revolving speed of the revolving speed and transmission shaft of wheel is less than i, then only enables second clutch.In driving to first clutch and the
Two clutches are used alternatingly, and can extend the service life of first clutch and second clutch, shield to clutch.
Based on braking method disclosed in the embodiments of the present invention, also correspondence of the embodiment of the present invention discloses a kind of vehicle control
Device processed, entire car controller is for controlling brake apparatus, wherein brake apparatus includes the first clutch being connected with the transmission shaft of vehicle
Device and the flywheel being connected with first clutch.Refering to Fig. 7, entire car controller 700 includes: first acquisition unit 701 and
One control unit 702.
First acquisition unit 701, for obtaining the revolving speed of transmission shaft and the revolving speed of flywheel.
First control unit 702, if being greater than the revolving speed of the flywheel for the revolving speed of transmission shaft, by first clutch
Combination degree control is combination degree corresponding with the braking requirement torque of brake apparatus.Wherein, the braking of brake apparatus needs
Seeking torque is the torque for needing brake apparatus to transmit when braking.
Optionally, in one specific embodiment of the application, entire car controller 700 further include:
Second control unit, if being less than the revolving speed of flywheel for the revolving speed of transmission shaft, by the combination degree control of first clutch
It is made as combination degree corresponding with the driving demand torque of brake apparatus.Wherein, the driving demand torque of brake apparatus is to add
The torque for needing brake apparatus to transmit when speed driving.
Optionally, in one specific embodiment of the application, entire car controller 700 further include: second acquisition unit, judgement are single
Member and determination unit.
Second acquisition unit, for obtaining the braking requirement torque of user；
Judging unit, the peak torque produced when for judging whether the braking requirement torque of user is greater than motor braking.
Determination unit will if the braking requirement torque for user is greater than peak torque producible when motor braking
The difference of producible peak torque, is determined as the braking requirement of brake apparatus when the braking requirement torque and motor braking of user
Torque.
Optionally, in the application another specific embodiment, brake apparatus further include: be connected respectively with transmission shaft and flywheel
Second clutch and the gear set that is connected respectively with first clutch and flywheel.The rotating ratio of gear set be i, i be greater than
1 number.
Wherein, first control unit 701, comprising: the first control subelement and the second control subelement.
First control subelement, if the revolving speed for transmission shaft is greater than the revolving speed of flywheel and the revolving speed and flywheel of transmission shaft
The ratio of revolving speed be greater than i, then be the braking requirement moment of torsion pair with brake apparatus by the control of the combination degree of first clutch
The combination degree answered, and be 0 by the control of the combination degree of second clutch.
Second control subelement, if the revolving speed for transmission shaft is greater than the revolving speed of flywheel and the revolving speed and flywheel of transmission shaft
The ratio of revolving speed be less than i, then be the braking requirement moment of torsion pair with brake apparatus by the control of the combination degree of second clutch
The combination degree answered, and be 0 by the control of the combination degree of first clutch.
Optionally, in the application another specific embodiment, further includes: third controls subelement and the 4th control is single
Member.
Third controls subelement, if the revolving speed for transmission shaft is less than the revolving speed of flywheel and the revolving speed and transmission shaft of flywheel
The ratio of revolving speed be greater than i, then be opposite with the driving demand torque of brake apparatus by the control of the combination degree of first clutch
The combination degree answered, and be 0 by the control of the combination degree of second clutch.Wherein, the driving demand torque of brake apparatus is to add
The torque for needing brake apparatus to transmit when speed driving.
4th control subelement, if the revolving speed for transmission shaft is less than the revolving speed of flywheel and the revolving speed and transmission shaft of flywheel
The ratio of revolving speed be less than i, then be opposite with the driving demand torque of brake apparatus by the control of the combination degree of second clutch
The combination degree answered, and be 0 by the control of the combination degree of first clutch.
In entire car controller 700 provided by the present application, entire car controller 700 is for controlling brake apparatus, wherein braking dress
Set the first clutch being connected including the transmission shaft with vehicle and the flywheel being connected with first clutch.When turning for transmission shaft
When speed is greater than Speed of Reaction Wheels, first control unit 702, which can control the combination degree of first clutch, is and brake apparatus
The corresponding combination degree of braking requirement torque, and then the kinetic energy on transmission shaft can be stored by first clutch to
On the connected flywheel of one clutch, by flywheel by Brake energy recovery, braking effect is realized.Compared with prior art, it recycles
The process of braking energy is not limited by battery technology, and more braking energies can be recycled in brake apparatus, increases brake force.
Professional technician can be realized or using the present invention.Profession of the various modifications to these embodiments to this field
It will be apparent for technical staff, the general principles defined herein can not depart from spirit or model of the invention
In the case where enclosing, realize in other embodiments.Therefore, the present invention will not be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with the principles and novel features disclosed herein.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (10)
1. a kind of braking method, which is characterized in that be applied in entire car controller, the entire car controller is for controlling braking dress
Set, wherein the brake apparatus include the first clutch being connected with the transmission shaft of vehicle and with the first clutch phase
Flywheel even；The braking method includes:
Obtain the revolving speed of the transmission shaft and the revolving speed of the flywheel；
If the revolving speed of the transmission shaft is greater than the revolving speed of the flywheel, by the control of the combination degree of the first clutch for
The corresponding combination degree of braking requirement torque of the brake apparatus；Wherein, the braking requirement torque of the brake apparatus is
The torque of the brake apparatus transmitting is needed when braking.
2. the method according to claim 1, wherein the brake apparatus further include: respectively with the transmission shaft
The second clutch being connected with the flywheel and the gear set being connected respectively with the first clutch and the flywheel；Institute
The rotating ratio for stating gear set is i, and i is the number greater than 1；
Wherein, if the revolving speed of the transmission shaft is greater than the revolving speed of the flywheel, by the combination journey of the first clutch
Degree control is combination degree corresponding with the braking requirement torque of the brake apparatus, comprising:
If the revolving speed of the transmission shaft is greater than the revolving speed and the revolving speed of the transmission shaft and the revolving speed of the flywheel of the flywheel
Ratio is greater than i, then is the braking requirement moment of torsion pair with the brake apparatus by the combination degree control of the first clutch
The combination degree answered, and be 0 by the control of the combination degree of the second clutch；
If the revolving speed of the transmission shaft is greater than the revolving speed and the revolving speed of the transmission shaft and the revolving speed of the flywheel of the flywheel
Ratio is less than i, then is the braking requirement moment of torsion pair with the brake apparatus by the combination degree control of the second clutch
The combination degree answered, and be 0 by the control of the combination degree of the first clutch.
3. the method according to claim 1, wherein further include:
If the revolving speed of the transmission shaft is less than the revolving speed of the flywheel, by the control of the combination degree of the first clutch for
The corresponding combination degree of driving demand torque of the brake apparatus；Wherein, the driving demand torque of the brake apparatus is
Accelerate the torque that the brake apparatus transmitting is needed when driving.
4. according to the method described in claim 2, it is characterized by further comprising:
If the revolving speed of the transmission shaft is less than the revolving speed and the revolving speed of the flywheel and the revolving speed of the transmission shaft of the flywheel
Ratio is greater than i, then is opposite with the driving demand torque of the brake apparatus by the combination degree control of the first clutch
The combination degree answered, and be 0 by the control of the combination degree of the second clutch；Wherein, the driving demand of the brake apparatus
Torque is the torque for accelerating to need the brake apparatus transmitting when driving；
If the revolving speed of the transmission shaft is less than the revolving speed and the revolving speed of the flywheel and the revolving speed of the transmission shaft of the flywheel
Ratio is less than i, then is opposite with the driving demand torque of the brake apparatus by the combination degree control of the second clutch
The combination degree answered, and be 0 by the control of the combination degree of the first clutch.
5. the method according to claim 1, wherein the calculating of the braking requirement torque of the brake apparatus
Journey, comprising:
Obtain the braking requirement torque of user；
Judge the peak torque produced when whether the braking requirement torque of the user is greater than motor braking；
If the braking requirement torque of the user is greater than peak torque producible when the motor braking, by the user's
The difference of producible peak torque when braking requirement torque and the motor braking, the braking for being determined as the brake apparatus need
Seek torque.
6. a kind of entire car controller, which is characterized in that the entire car controller is for controlling brake apparatus, wherein the braking
Device includes the first clutch being connected with the transmission shaft of vehicle and the flywheel that is connected with the first clutch；It is described whole
Vehicle controller includes:
First acquisition unit, for obtaining the revolving speed of the transmission shaft and the revolving speed of the flywheel；
First control unit, if being greater than the revolving speed of the flywheel for the revolving speed of the transmission shaft, by the first clutch
Combination degree control be combination degree corresponding with the braking requirement torque of the brake apparatus；Wherein, the braking dress
The braking requirement torque set is the torque that the brake apparatus transmitting is needed when braking.
7. entire car controller according to claim 6, which is characterized in that the brake apparatus further include: respectively with it is described
Transmission shaft and the flywheel second clutch being connected and the gear being connected respectively with the first clutch and the flywheel
Group；The rotating ratio of the gear set is i, and i is the number greater than 1；
Wherein, the first control unit, comprising:
First control subelement, if the revolving speed for the transmission shaft is greater than the revolving speed of the flywheel and turn of the transmission shaft
The fast ratio with the revolving speed of the flywheel is greater than i, then is to fill with the braking by the combination degree control of the first clutch
The corresponding combination degree of braking requirement torque set, and be 0 by the control of the combination degree of the second clutch；
Second control subelement, if the revolving speed for the transmission shaft is greater than the revolving speed of the flywheel and turn of the transmission shaft
The fast ratio with the revolving speed of the flywheel is less than i, then is to fill with the braking by the combination degree control of the second clutch
The corresponding combination degree of braking requirement torque set, and be 0 by the control of the combination degree of the first clutch.
8. entire car controller according to claim 6, which is characterized in that further include:
Second control unit, if being less than the revolving speed of the flywheel for the revolving speed of the transmission shaft, by the first clutch
Combination degree control be combination degree corresponding with the driving demand torque of the brake apparatus；Wherein, the braking dress
The driving demand torque set is the torque for accelerating to need the brake apparatus transmitting when driving.
9. entire car controller according to claim 7, which is characterized in that further include:
Third controls subelement, if the revolving speed for the transmission shaft is less than the revolving speed of the flywheel and the revolving speed of the flywheel
It is greater than i with the ratio of the revolving speed of the transmission shaft, then is to be filled with the braking by the combination degree control of the first clutch
The corresponding combination degree of driving demand torque set, and be 0 by the control of the combination degree of the second clutch；Wherein, institute
The driving demand torque for stating brake apparatus is the torque for accelerating to need the brake apparatus transmitting when driving；
4th control subelement, if the revolving speed for the transmission shaft is less than the revolving speed of the flywheel and the revolving speed of the flywheel
It is less than i with the ratio of the revolving speed of the transmission shaft, then is to be filled with the braking by the combination degree control of the second clutch
The corresponding combination degree of driving demand torque set, and be 0 by the control of the combination degree of the first clutch.
10. entire car controller according to claim 6, which is characterized in that further include:
Second acquisition unit, for obtaining the braking requirement torque of user；
Judging unit, the maximum torsion produced when for judging whether the braking requirement torque of the user is greater than motor braking
Square；
Determination unit, if the braking requirement torque for the user is greater than peak torque producible when the motor braking,
The difference of producible peak torque, is determined as the system when then by the braking requirement torque of the user and the motor braking
The braking requirement torque of dynamic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588334.8A CN110103721A (en) | 2019-07-02 | 2019-07-02 | Braking method and entire car controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588334.8A CN110103721A (en) | 2019-07-02 | 2019-07-02 | Braking method and entire car controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110103721A true CN110103721A (en) | 2019-08-09 |
Family
ID=67495955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910588334.8A Pending CN110103721A (en) | 2019-07-02 | 2019-07-02 | Braking method and entire car controller |
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| Country | Link |
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| CN (1) | CN110103721A (en) |
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Application publication date: 20190809 |