CN104608644B - A kind of electric automobile is segmented composite braking system and its energy reclaiming method - Google Patents
A kind of electric automobile is segmented composite braking system and its energy reclaiming method Download PDFInfo
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- CN104608644B CN104608644B CN201510025850.1A CN201510025850A CN104608644B CN 104608644 B CN104608644 B CN 104608644B CN 201510025850 A CN201510025850 A CN 201510025850A CN 104608644 B CN104608644 B CN 104608644B
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- braking
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- determining device
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Abstract
A kind of electric automobile is segmented composite braking system and its energy reclaiming method, the method receives pilot model brake signal by the compound determining device of segmentation, judge when electric automobile carries out motor braking, electro-hydraulic brake, and carry out the energy regenerating under correspondence brake condition.The system includes pilot model, segmentation compound determining device, pure motor braking pattern, electro-hydraulic brake pattern, energy storage device.The pilot model is used to determine the braking mode of electric automobile as the input source of light brake, moderate system and emergency brake signal.The segmentation composite braking determining device receives pilot model brake signal, for judging when electric automobile opens pure motor braking pattern and electro-hydraulic brake pattern, electric automobile is set to open pure motor braking pattern and electro-hydraulic brake pattern according to the power of brake signal.Using segmentation composite braking system simple structure, braking procedure security is ensure that, while ensure that good brake feel.
Description
Technical field
The present invention relates to a kind of electric automobile segmentation composite braking system and its energy reclaiming method, belong to automobile brake skill
Art field.
Background technology
At present, under the pressure of the energy and environment, automobile of the development with low-carbon environment-friendly is increasingly subject to society
Concern, using segmentation composite braking in the braking procedure of electric automobile, can not only ensure the security peace of braking procedure
It is pliable, also reclaim the electric energy of production capacity in braking procedure.
In terms of composite braking is segmented, braking procedure is divided into pure motor braking pattern and electro-hydraulic brake pattern, be segmented
Composite braking has taken into account security, brake feel, while can more recover energy again.
In terms of energy regenerating and storage, when electric automobile is under pure motor work operating mode, does not carry out energy now and return
Receive, when electric automobile is under electro-hydraulic brake operating mode, it is ensured that while brake safe and smooth-going, energy regenerating is carried out again.
The content of the invention
The present invention is directed to propose a kind of electric automobile segmentation composite braking system and its energy reclaiming method, it is therefore an objective to make electricity
Electrical automobile driving safety and smooth-going during composite braking is segmented, energy reclaiming method used at the same time it is simple effectively and also into
This is low.
To achieve the above object, the technical scheme is that：A kind of electric automobile is segmented composite braking system and its energy
Amount recovery method, the method receives pilot model brake signal by the compound determining device of segmentation, judges when electric automobile enters
Row motor braking, electro-hydraulic brake, and carry out the energy regenerating under correspondence brake condition.The system includes pilot model, segmentation
Compound determining device, pure motor braking pattern, electro-hydraulic brake pattern, energy storage device.
The pilot model is used to determine as the input source of light brake, moderate system and emergency brake signal
The braking mode of electric automobile.
The segmentation composite braking determining device receives pilot model brake signal, for judging when electric automobile is opened
Pure motor braking pattern and electro-hydraulic brake pattern, enable electric automobile to open pure motor braking mould according to the power of brake signal
Formula and electro-hydraulic brake pattern.
The pure motor braking pattern includes electric machine controller, motor/generator, current detector, braking resistor box,
Pure motor braking pattern can be just worked in the case where segmentation composite braking determining device opens this kind of pattern, is slightly made for electric automobile
Start building under condition, the braking moment for now being needed during electric vehicle brake is smaller, the pure motor braking of exclusive use disclosure satisfy that electronic
Automobile brake requirement, it is ensured that the security of braking.
The electric machine controller is used to receive driving and brake signal, plays driving and braking action.During damped condition, when
During the electric energy produced in braking resistor consumption braking procedure, the circuit played between cut-out and segmentation composite braking determining device is made
With.
The motor/generator is the mode of operation of two kinds under different operating operating mode of motor, when electric automobile is
Electric machine controller directly controls motor when driving operating mode, drives automobile；When electric automobile is damped condition, now motor
Counter dragging is changed into generator, and mechanical energy is switched to electric energy.
The current detector is connected between motor/generator and energy storage device, for detecting that generator is sent
The size of electric current, plays motor/generator and is acted on energy storage device connecting and disconnecting of the circuit.
The braking resistor box includes braking resistor determining device and braking resistor, braking resistor determining device and braking resistor string
In circuit, braking resistor determining device plays a part of to play pure motor braking operating mode with braking resistor path, braking resistor connection
The consumption of lower generation electric current.
The electro-hydraulic brake pattern is used for electric automobile in moderate or brake hard operating mode, including hydraulic braking and motor
Braking, hydraulic braking and motor braking work simultaneously in moderate or brake hard.
The hydraulic braking includes pure hydraulic braking and abs braking, and hydraulic braking will not produce feedback current, abs braking
Play a part of to prevent wheel lock up.
The energy storage device includes charger, super capacitor, DC/DC, battery management system, battery pack, SOC collection dresses
Put.For storing produced electric energy under electro-hydraulic brake pattern.
The present invention has following prominent advantage：
1st, using segmentation composite braking system simple structure, braking procedure security is ensure that, while ensure that good
Brake feel.
2nd, energy regenerating mode in the motor braking pattern of design, using braking resistor box, for consuming pure motor braking
During produce low current, this kind of method simple structure, while low cost, improves the service life and energy of battery pack again
Organic efficiency.
3rd, use super capacitor, DC/DC to be charged for battery pack when feedback current fluctuation is larger, improve battery pack and use the longevity
Life.
Brief description of the drawings
Fig. 1 is segmented composite braking system structure chart.
The pure motor braking model structure charts of Fig. 2.
Fig. 3 energy storage device structure figures.
Specific embodiment
Below in conjunction with the accompanying drawings, preferred embodiment method of the invention is elaborated.
As shown in figure 1, segmentation composite braking system structure chart, the system include pilot model, the compound determining device of segmentation,
Pure motor braking pattern, electro-hydraulic brake pattern, energy storage device.The pilot model is connected with the compound determining device of segmentation, described
Pure motor braking pattern is connected to segmentation and is combined between determining device and energy storage device with electro-hydraulic brake pattern in form in parallel.It is first
First segmentation composite braking determining device receives driver's signal, makes pure motor braking pattern and electro-hydraulic brake mode decision, pure
Energy regenerating is not carried out under motor braking pattern, under electro-hydraulic brake pattern, energy regenerating is carried out, the energy storage for reclaiming to storage
In energy device.
Fig. 2 is pure motor braking model structure chart, and the pure motor braking pattern includes being to include electric machine controller, electronic
Machine/generator, current detector, braking resistor box.The electric machine controller, motor/generator, current detector are passed through successively
Wired in series is crossed, the braking resistor box includes braking resistor and braking resistor determining device, braking resistor box and motor/generating
Machine is in parallel, braking resistor and braking resistor determining device braking resistor box in series, produce under pure motor braking pattern for being consumed
Raw electric energy.
If Fig. 3 is energy storage device structure figure, the energy storage device includes being charger, super capacitor, DC/DC, cell tube
Reason system, battery pack, SOC harvesters.It is divided into two branch roads between the charger and battery management system, all the way by super
Level electric capacity, DC/DC to battery management system, wherein super capacitor, DC/DC and battery management system pass sequentially through wired in series,
Another road charger is directly in series with battery management system by wire, and super electricity is used when feedback current fluctuation is larger
Hold, DC/DC is battery pack charging；The battery management system, by wired in series, plays the work of protection battery pack with battery pack
With.The SOC harvesters between battery pack and charger, gather the state of battery by wired in series, enter controller
Row relevant work.
Comprise the following steps that,
(1) pilot model produces brake signal, segmentation composite braking determining device to receive system after feeding back to pavement behavior
Judged after dynamic signal.When the signal for receiving is light brake signal, electric automobile performs pure motor braking operating mode, this kind of
Energy regenerating is not carried out under operating mode；When the signal for receiving is moderate or emergency brake signal, electric automobile performs electro-hydraulic machine
Damped condition, this kind of operating mode carries out energy regenerating in the case where braking procedure safety is ensured.
(2) according to step (1), when electric automobile enters the braking of pure motor mode, electric machine controller can automatically cut off and divide
Circuit between section composite braking determining device, counter the dragging of engine is changed into generator, produces electric current, current detector to detect small electricity
The out-of-date circuit that can also cut off and charger between of circulation.
(3) according to step (2), now braking resistor determining device detects the electric current of generator generation, and braking resistor is sentenced
Disconnected device can be opened voluntarily, while electric machine controller can cut off and be segmented the circuit between composite braking determining device, make generator, system
Dynamic resistance determining device, braking resistor forms a loop, and braking resistor can consume the electric energy that now generator is produced, with heat energy
Form is consumed.
(4) according to step (1), when electric automobile enters electro-hydraulic brake pattern, motor braking and hydraulic braking can be while works
Make, braking resistor determining device during motor braking in braking resistor box can voluntarily cut off the resistance and braking resistor between, enter
Energy recuperation mode.
(5) according to step (4), during energy regenerating, the SOC of charger Real-time Collection to battery pack, when battery pack allows to fill
Charger operation is in charged state when electric and detects charging current, is used directly to battery when charging current is more steady
The mode that group charges；Super capacitor, DC/DC is used to be charged for battery pack when current fluctuation is larger.
(6) according to step (5), when charger judges that battery pack need not be charged, charger can cut off and electric current
Circuit between detector, braking resistor determining device can be opened, while electric machine controller can cut off judging with segmentation composite braking
Circuit between device, make generator, braking resistor determining device, braking resistor forms a loop, and braking resistor can be consumed now
The electric energy that generator is produced, is consumed in the form of heat energy.
(7) according to step (4), electric automobile enters hydraulic braking, and abs braking mode decision device can be according to electric automobile
Damped condition choose whether in real time abs braking, whether pure hydraulic braking, to ensure the insensitivity in braking procedure.
Claims (9)
1. a kind of electric automobile is segmented composite braking system, it is characterised in that：The system includes that pilot model, segmentation are compound and sentences
Disconnected device, pure motor braking pattern, electro-hydraulic brake pattern, energy storage device；The pilot model is connected with the compound determining device of segmentation,
The pure motor braking pattern and electro-hydraulic brake pattern with form in parallel be connected to the compound determining device of segmentation and energy storage device it
Between；Segmentation composite braking determining device first receives driver's signal, makes pure motor braking pattern and electro-hydraulic brake pattern is sentenced
It is disconnected, energy regenerating is not carried out under pure motor braking pattern, under electro-hydraulic brake pattern, energy regenerating is carried out, the energy storage reclaimed
It is stored in energy storage device；
It is to include electric machine controller, motor/generator, current detector, braking resistor that the pure motor braking pattern includes
Box；The electric machine controller, motor/generator, current detector sequentially pass through wired in series, and the braking resistor box includes
Braking resistor and braking resistor determining device, braking resistor box are in parallel with motor/generator, and braking resistor and braking resistor judge
Device braking resistor box in series, for consuming the electric energy produced under pure motor braking pattern；
The energy storage device includes being charger, super capacitor, DC/DC, battery management system, battery pack, SOC harvesters；
It is divided into two branch roads between the charger and battery management system, all the way by super capacitor, DC/DC to battery management system
System, wherein super capacitor, DC/DC and battery management system pass sequentially through wired in series, and another road charger is directly and cell tube
Reason system is in series by wire, uses super capacitor, DC/DC to be charged for battery pack when feedback current fluctuation is big；The electricity
Pond management system, by wired in series, plays a part of to protect battery pack with battery pack；The SOC harvesters pass through wire string
It is associated between battery pack and charger, gathers the state of battery, controller is carried out relevant work；Electricity is carried out using said system
Electrical automobile is segmented combined brake energy recovery method, and the method is comprised the following steps that,
(1) pilot model produces brake signal, segmentation composite braking determining device to receive braking letter after feeding back to pavement behavior
Judged after number；When the signal for receiving is light brake signal, electric automobile performs pure motor braking operating mode, Ci Zhonggong
Energy regenerating is not carried out under condition；When the signal for receiving is moderate or emergency brake signal, electric automobile performs electro-hydraulic mechanism
Start building condition, this kind of operating mode carries out energy regenerating in the case where braking procedure safety is ensured；
(2) according to step (1), when electric automobile enters the braking of pure motor mode, electric machine controller can automatically cut off and segmentation is multiple
The circuit between braking determining device is closed, counter the dragging of engine is changed into generator, produce electric current, current detector to detect low current and lead to
The out-of-date circuit that can also cut off and charger between；
(3) according to step (2), now braking resistor determining device detects the electric current of generator generation, braking resistor determining device
Can voluntarily open, while electric machine controller can cut off and be segmented the circuit between composite braking determining device, make generator, braking electricity
Resistance determining device, braking resistor forms a loop, and braking resistor can consume the electric energy that now generator is produced, in the form of heat energy
Consume；
(4) according to step (1), when electric automobile enters electro-hydraulic brake pattern, motor braking and hydraulic braking can work simultaneously, electricity
Braking resistor determining device when mechanism is dynamic in braking resistor box can voluntarily cut off the resistance and braking resistor between, be returned into energy
Receipts pattern；
(5) according to step (4), during energy regenerating, the SOC of charger Real-time Collection to battery pack, when battery pack allows to charge
Charger operation is in charged state and detects charging current, is used when charging current is more steady and is filled directly to battery pack
The mode of electricity；Super capacitor, DC/DC is used to be charged for battery pack when current fluctuation is big；
(6) according to step (5), when charger judges that battery pack need not be charged, charger can cut off and current detecting
Circuit between device, braking resistor determining device can be opened, at the same electric machine controller can cut off with segmentation composite braking determining device it
Between circuit, make generator, braking resistor determining device, braking resistor forms a loop, and braking resistor can be consumed and now generated electricity
The electric energy that machine is produced, is consumed in the form of heat energy；
(7) according to step (4), electric automobile enters hydraulic braking, and abs braking mode decision device can be according to the braking of electric automobile
Operating mode choose whether in real time abs braking, whether pure hydraulic braking, to ensure the insensitivity in braking procedure.
2. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：Driver's mould
Type is used to determine the braking mode of electric automobile as the input source of light brake, moderate braking and emergency brake signal；
The segmentation composite braking determining device receives pilot model brake signal, for judging when electric automobile opens pure electricity
Machine braking mode and electro-hydraulic brake pattern, enable electric automobile according to the power of brake signal open pure motor braking pattern and
Electro-hydraulic brake pattern.
3. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The pure motor system
Dynamic model formula includes electric machine controller, motor/generator, current detector, braking resistor box, and pure motor braking pattern is to divide
Section composite braking determining device can just work under opening this kind of pattern, for electric automobile light brake operating mode under, now electronic vapour
The braking moment that car needs when braking is smaller, pure motor braking is used alone and disclosure satisfy that electric vehicle brake requirement, it is ensured that
The security of braking.
4. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The motor control
Device is used to receive driving and brake signal, plays driving and braking action；During damped condition, when braking resistor consumes braking procedure
During the electric energy of middle generation, the circuit function between cut-out and segmentation composite braking determining device is played.
5. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The motor/
Generator is the mode of operation of two kinds under different operating operating mode of motor, the electric machine controller when electric automobile is to drive operating mode
Motor is directly controlled, automobile is driven；When electric automobile is damped condition, now counter the dragging of motor is changed into generator, machine
Tool can switch to electric energy.
6. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The current detecting
Device is connected between motor/generator and energy storage device, for detecting that generator sends the size of electric current, plays electronic
Machine/generator is acted on energy storage device connecting and disconnecting of the circuit.
7. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The braking resistor
Box includes braking resistor determining device and braking resistor, and braking resistor determining device is connected in circuit with braking resistor, braking resistor
Determining device plays a part of to play the consumption of generation electric current under pure motor braking operating mode with braking resistor path, braking resistor.
8. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The electro-hydraulic brake
Pattern is used for electric automobile in moderate or brake hard operating mode, including hydraulic braking and motor braking, hydraulic braking and motor
Braking works simultaneously in moderate or brake hard；
The hydraulic braking includes pure hydraulic braking and abs braking, and hydraulic braking will not produce feedback current, and abs braking is played
Prevent the effect of wheel lock up.
9. a kind of electric automobile according to claim 1 is segmented composite braking system, it is characterised in that：The energy storage device
Including charger, super capacitor, DC/DC, battery management system, battery pack, SOC harvesters；For storing electro-hydraulic brake mould
Produced electric energy under formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510025850.1A CN104608644B (en) | 2015-01-19 | 2015-01-19 | A kind of electric automobile is segmented composite braking system and its energy reclaiming method |
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|---|---|---|---|
| CN201510025850.1A CN104608644B (en) | 2015-01-19 | 2015-01-19 | A kind of electric automobile is segmented composite braking system and its energy reclaiming method |
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| CN104608644A CN104608644A (en) | 2015-05-13 |
| CN104608644B true CN104608644B (en) | 2017-06-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106043256B (en) * | 2016-07-11 | 2018-09-25 | 南京航空航天大学 | A kind of electric vehicle Electro-hydraulic brake system and its optimization method |
| CN107323270B (en) * | 2017-05-23 | 2020-04-14 | 北汽福田汽车股份有限公司 | Electric automobile and energy feedback method and system thereof |
| CN109703375B (en) * | 2019-01-30 | 2020-07-21 | 吉林大学 | Electric automobile regenerative braking energy coordinated recovery control method |
| CN110040000A (en) * | 2019-04-25 | 2019-07-23 | 浙江吉利控股集团有限公司 | Method for recovering brake energy, brake energy recovering system and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2933356B1 (en) * | 2008-07-04 | 2010-12-17 | Peugeot Citroen Automobiles Sa | ENERGY STORAGE DEVICE FOR MOTOR VEHICLES OF THE HYBRID OR ELECTRIC TYPE AND METHOD FOR MANAGING ELECTRICAL ENERGY THEREFOR |
| CN202345421U (en) * | 2011-10-29 | 2012-07-25 | 苏州海格新能源汽车电控***科技有限公司 | Brake feedback control circuit of electric automobile |
| CN202541337U (en) * | 2012-03-05 | 2012-11-21 | 郑州宇通客车股份有限公司 | Hybrid electric vehicle brake system and hybrid electric vehicle using same |
| CN104097523A (en) * | 2013-04-11 | 2014-10-15 | 陈奔 | Electrical emergency braking system of pure electric vehicle |
| CN104108316B (en) * | 2014-04-12 | 2017-01-25 | 北京工业大学 | Electrohydraulic-combined brake control method of battery electric vehicle |
| CN104015626A (en) * | 2014-05-29 | 2014-09-03 | 北京航空航天大学 | Hybrid power system for electric car |
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