CN104228591A - Recovered braking energy recovery control method and device - Google Patents
Recovered braking energy recovery control method and device Download PDFInfo
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- CN104228591A CN104228591A CN201410531559.7A CN201410531559A CN104228591A CN 104228591 A CN104228591 A CN 104228591A CN 201410531559 A CN201410531559 A CN 201410531559A CN 104228591 A CN104228591 A CN 104228591A
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Abstract
The invention discloses a recovered braking energy recovery control method and device, and relates to the field of electric automobile control. The method includes the steps of obtaining gear signals of a driving electric automobile and opening and closing degree data of an accelerator pedal or a brake pedal, judging whether the obtained gear signals are advance gear signals or not, if yes, judging the deceleration intention of a driver according to the opening and closing degree data of the accelerator pedal or the brake pedal, obtaining charge state data of a power battery of the electric automobile when the deceleration intention of the driver is confirmed, converting the recovered braking energy of the electric automobile into electric energy according to the charge state data, and storing the electric energy into the power battery. By recovering the recovered braking energy, the driver can feel more comfortable during driving, the traveling mileage of the electric automobile is increased, and the service life of a brake lining is prolonged.
Description
Technical field
The present invention relates to Control of Electric Vehicles field, particularly a kind of regenerating braking energy recycling and control method of electronlmobil and relevant device.
Background technology
When electric vehicle brake, regenerative braking torque drives traction electric machine to be operated in Generator Status, and produced kinetic energy is changed into electric energy by the rotation of tire, the electrical power storage produced is in electrokinetic cell, and this produces material impact to prolongation battery-driven car travelled distance.
External relevant research shows, there is braking more frequently with under the city operating mode condition of service started, and reclaims braking energy and the continual mileage of electronlmobil can be made to extend 10 to percent three ten.
Research braking energy of electric automobiles reclaims, and appropriate design brakig force distribution control policy, makes full use of the energy, and battery-driven car can be made to increase continual mileage to greatest extent.
Summary of the invention
The object of the present invention is to provide a kind of regenerating braking energy recycling and control method and device, regenerating braking energy can be controlled by which better the braking intention of perception driver and reclaim.
According to an aspect of the present invention, provide a kind of regenerating braking energy recycling and control method, comprising:
Obtain the opening degree data of the gear signal of the electronlmobil in travelling, acceleration pedal or brake pedal;
Judge whether the gear signal obtained is advance gear signal;
If described gear signal is advance gear signal, then according to the opening degree data of described acceleration pedal or brake pedal, the deceleration intention of chaufeur is judged;
When determining the deceleration intention of chaufeur, obtaining the state of charge data of electric automobile power battery, and according to described state of charge data, converting the regenerating braking energy of electronlmobil to electric energy, and be stored in electrokinetic cell.
Preferably, described the step that the deceleration intention of chaufeur judges to be comprised:
Described acceleration pedal arranges the first stroke sensor;
Utilize described first stroke sensor, gather the opening degree data of described acceleration pedal;
The opening degree data of collected acceleration pedal and default acceleration pedal opening degree threshold value are compared;
When the opening degree data of collected acceleration pedal are less than described default acceleration pedal opening degree threshold value, determine the deceleration intention of chaufeur.
Preferably, described according to described state of charge data, convert the regenerating braking energy of electronlmobil to electric energy, and the step be stored in electrokinetic cell comprises:
Described state of charge data and default state of charge data threshold are compared;
When described state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed;
In the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the described speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to described regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
Preferably, described the step that the deceleration intention of chaufeur judges to be comprised:
Described brake pedal arranges the second stroke sensor;
Utilize described second stroke sensor, gather the opening degree data of described brake pedal;
When the opening degree data of collected brake pedal are greater than zero, determine the deceleration intention of chaufeur.
Preferably, described according to described state of charge data, convert the regenerating braking energy of electronlmobil to electric energy, and the step be stored in electrokinetic cell comprises:
Described state of charge data and default state of charge data threshold are compared;
When described state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed;
In the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the described speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to described regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
Preferably, also comprise:
In the total braking force mapping table preset, search the total braking force square corresponding with the opening degree data of described brake pedal;
Utilize described total braking force square and regenerative braking moment data, calculate hydraulic braking moment;
Hydraulic braking moment is sent to electronic stabilizing control system, controls the hydraulic braking force be applied in the brake lining of hydraulic brake system for described electronic stabilizing control system according to described hydraulic braking moment.
Preferably, also comprise:
During converting the regenerating braking energy of electronlmobil to power storage to electrokinetic cell, the starting state of the anti-lock brake system of electronlmobil is detected;
When detecting that described anti-lock brake system starts, stop the regenerating braking energy of conversion electronlmobil.
According to a further aspect in the invention, provide a kind of regenerating braking energy recovery control device, comprising:
Data acquisition module, for obtaining the opening degree data of the gear signal of the electronlmobil in traveling, acceleration pedal or brake pedal;
First judge module, for judging whether obtained gear signal is advance gear signal;
Second judge module, for when described first judge module judges that gear signal is advance gear signal, according to the opening degree data of described acceleration pedal or brake pedal, judges the deceleration intention of chaufeur;
Energy recovery module, for when determining the deceleration intention of chaufeur, obtaining the state of charge data of electric automobile power battery, and according to described state of charge data, converting the regenerating braking energy of electronlmobil to electric energy, and be stored in electrokinetic cell.
Preferably, described data acquisition module comprises:
Be arranged on the first stroke sensor on acceleration pedal, be used for gathering the opening degree data of described acceleration pedal, for the second judge module when determining that the opening degree data of collected acceleration pedal are less than described default acceleration pedal opening degree threshold value, determine the deceleration intention of chaufeur;
Be arranged on the second stroke sensor on brake pedal, be used for gathering the opening degree data of described brake pedal, for the second judge module when determining that the opening degree data of collected brake pedal are greater than zero, determine the deceleration intention of chaufeur.
Preferably, described state of charge data and default state of charge data threshold compare by described energy recovery module, when described state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed, in the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the described speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to described regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
Compared with prior art, beneficial effect of the present invention is:
The present invention, by the braking intention of perception chaufeur, reclaims regenerating braking energy, and chaufeur can be made to obtain better driver comfort, increases electronlmobil and exercises mileage, extend the brake lining life-span.
Accompanying drawing explanation
Fig. 1 is the regenerating braking energy recycling and control method functional block diagram that the embodiment of the present invention provides;
Fig. 2 is the regenerating braking energy recovery control device block diagram that the embodiment of the present invention provides;
Fig. 3 is the regenerative braking energy reclaiming system schematic diagram that the embodiment of the present invention provides;
Fig. 4 is that the regenerating braking energy that the embodiment of the present invention provides reclaims control flow chart;
Fig. 5 is the regenerative braking torque that provides of the embodiment of the present invention and acceleration pedal, regenerative brake select switch relation schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 1 is the regenerating braking energy recycling and control method functional block diagram that the embodiment of the present invention provides, and as shown in Figure 1, comprising:
Step S101: the opening degree data obtaining the gear signal of the electronlmobil in travelling, acceleration pedal or brake pedal.
In electronlmobil, gear signal at least comprises advance gear (D) signal, neutral position (N) signal, backing car gear (R) signal and parking stall (P) signal, can setting position sensor, by the corresponding gear operating lever position-signal that gear operating lever and the position sensing device between position of matching with it obtain, thus determine concrete gear signal.
Can the first stroke sensor be set on acceleration pedal, and utilizes the first stroke sensor, gather the opening degree data of acceleration pedal.
Can the second stroke sensor be set on brake pedal, and utilizes the second stroke sensor, gather the opening degree data of brake pedal.
Step S102: judge whether the gear signal obtained is advance gear signal.
Step S103: if gear signal is advance gear signal, then according to the opening degree data of acceleration pedal or brake pedal, judge the deceleration intention of chaufeur.
When the deceleration intention of chaufeur is judged, specifically comprise following two kinds of situations:
The first: during chaufeur release the gas pedal, opening degree data and the default acceleration pedal opening degree threshold value of the acceleration pedal collected by the first stroke sensor compare, if the opening degree data of the acceleration pedal collected are less than default acceleration pedal opening degree threshold value, then determine that chaufeur has deceleration intention;
The second: after chaufeur is totally released acceleration pedal, judges whether the opening degree data of the brake pedal that the second stroke sensor collects are greater than zero, if be greater than zero, then determines that chaufeur has deceleration intention.
Step S104: when determining the deceleration intention of chaufeur, obtains the state of charge data of electric automobile power battery, and according to state of charge data, converts the regenerating braking energy of electronlmobil to electric energy, and be stored in electrokinetic cell.
When regenerating braking energy is reclaimed, first state of charge data and default state of charge data threshold are compared, when state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed; Then in the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, electric machine controller is according to regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
For above-mentioned the second situation, namely after chaufeur steps on brake pedal, need in the total braking force mapping table preset, search the total braking force square corresponding with the opening degree data of brake pedal, and utilize total braking force square and regenerative braking moment data, calculate hydraulic braking moment, then hydraulic braking moment is sent to electronic stabilizing control system, controls the hydraulic braking force be applied in the brake lining of hydraulic brake system for electronic stabilizing control system according to hydraulic braking moment.
It should be noted that, during converting the regenerating braking energy of electronlmobil to power storage to electrokinetic cell, the starting state of the anti-lock brake system of electronlmobil is detected, once detect that anti-lock brake system starts, need to stop the regenerating braking energy of electronlmobil to be converted to electric energy, namely stop regenerating braking energy reclaiming.
Above-mentioned state of charge data can be the ratio that electrokinetic cell dump energy accounts for electrokinetic cell total volume, the span of described default state of charge data threshold is [90%, 99%], can be such as 95%, namely, when state of charge data are below 95%, regenerating braking energy recovery can be carried out.
Fig. 2 is the regenerating braking energy recovery control device block diagram that the embodiment of the present invention provides, and as shown in Figure 2, comprises data acquisition module 201, first judge module 202, second judge module 203, energy recovery module 204.
Data acquisition module 201 is for obtaining the opening degree data of the gear signal of the electronlmobil in traveling, acceleration pedal or brake pedal.Wherein, data acquisition module 201 comprises position transduser, the first stroke sensor, the second stroke sensor, specifically, gear signal at least comprises advance gear signal, neutral position signal, backing car gear signal and parking stall signal, by the corresponding gear operating lever position-signal that gear operating lever and the position sensing device between position of matching with it obtain, thus determine concrete gear signal; The opening degree data of acceleration pedal can by being arranged on the first stroke sensor collection on acceleration pedal, for the second judge module when determining that the opening degree data of collected acceleration pedal are less than default acceleration pedal opening degree threshold value, determine the deceleration intention of chaufeur; The opening degree data of brake pedal by being arranged on the second stroke sensor collection on brake pedal, for the second judge module when determining that the opening degree data of collected brake pedal are greater than zero, can determine the deceleration intention of chaufeur.
First judge module 202 is for judging whether obtained gear signal is advance gear signal.
Second judge module 203, for when the first judge module judges that gear signal is advance gear signal, according to the opening degree data of acceleration pedal or brake pedal, judges the deceleration intention of chaufeur.Specifically, during chaufeur release the gas pedal, opening degree data and the default acceleration pedal opening degree threshold value of the acceleration pedal that the first stroke sensor collects by the second judge module 203 compare, if the opening degree data of the acceleration pedal collected are less than default acceleration pedal opening degree threshold value, then determine that chaufeur has deceleration intention; After chaufeur is totally released acceleration pedal, the second judge module 203 judges whether the opening degree data of the brake pedal that the second stroke sensor collects are greater than zero, if be greater than zero, then determines that chaufeur has deceleration intention.
Energy recovery module 204, for when determining the deceleration intention of chaufeur, obtaining the state of charge data of electric automobile power battery, and according to state of charge data, converting the regenerating braking energy of electronlmobil to electric energy, and be stored in electrokinetic cell.Specifically, state of charge data and default state of charge data threshold compare by energy recovery module, when state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed, in the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
What needs further illustrated is, after chaufeur steps on brake pedal, need in the total braking force mapping table preset, search the total braking force square corresponding with the opening degree data of brake pedal, and utilize total braking force square and regenerative braking moment data, calculate hydraulic braking moment, then hydraulic braking moment is sent to electronic stabilizing control system, makes electronic stabilizing control system control the hydraulic braking force be applied in the brake lining of hydraulic brake system according to hydraulic braking moment.
It should be noted that, during converting the regenerating braking energy of electronlmobil to power storage to electrokinetic cell, the starting state of the anti-lock brake system of electronlmobil is detected, once detect that anti-lock brake system starts, need to stop the regenerating braking energy of electronlmobil to be converted to electric energy, namely stop regenerating braking energy reclaiming.
Further, regenerating braking energy can be controlled by the full-vehicle control unit of electronlmobil and reclaim, that is, use the acceleration pedal with stroke sensor and brake pedal, can allow the deceleration intention of the accurate perception chaufeur of full-vehicle control unit.The coherent signal of full-vehicle control unit Real-time Collection acceleration pedal, brake pedal, gathers motor speed, the speed of a motor vehicle, power battery charged state (SOC) data, each ECU (Electrical Control Unit) faulty condition, anti-lock brake system (ABS) starting state, signal such as electronic stabilizing control system (ESC) mode of operation, hydraulic braking force etc. by CAN.When chaufeur release the gas pedal, full-vehicle control unit inspection is to chaufeur deceleration intention, and when detecting that acceleration pedal is reduced within default acceleration pedal opening degree threshold value (such as 30%), full-vehicle control unit inspection is to without full-vehicle control fault, electrokinetic cell SOC is lower than default state of charge data threshold (such as 95%, can demarcate), electrokinetic cell connects normal, full-vehicle control unit obtains vehicle speed signal, table look-up according to vehicle speed signal and obtain regenerative braking torque (i.e. regenerative braking moment), and send to electric machine controller, start regenerating braking energy to reclaim, lock torque is demarcated according to the speed of a motor vehicle, braking effect is equal to the engine brake force of Same Efficieney size.Visible, in acceleration pedal dispose procedure, when being also in a high position from acceleration pedal just Brake energy recovery moment is applied to drive motor, can obvious regulation speed reduction of speed trend, shorten brake mileage, raising driver comfort.When the complete release the accelerator pedal of chaufeur, and when stepping on brake pedal, full-vehicle control unit inspection is to the stronger braking requirement of chaufeur, table look-up according to speed of a motor vehicle size and obtain regenerative braking torque, table look-up obtains total brake torque to the stroke stepped on according to brake pedal (i.e. brake pedal step on opening degree data), now, the braking force of vehicle is made up of two parts: a part of braking force comes from conventional hydraulic brake system, the regenerative braking force that a part of braking force produces from drive motor.Full-vehicle control unit can need regulating brake force to distribute according to vehicle, in braking procedure, utilize regenerating braking energy to greatest extent.The braking energy that drive motor produces is no more than default state of charge data threshold (such as 95% at electrokinetic cell SOC, can demarcate), and battery, motor, Full Vehicle System can feed back to electrokinetic cell under all not having situation in bad order, to power battery charging, carry out energy regenerating.In energy recovery process, be support vehicles safety, need to guarantee that ABS does not open, once ABS works, stop Brake energy recovery at once.By the regenerative braking force of drive motor, better driver comfort can be obtained, increase electronlmobil continual mileage, extend the brake lining life-span.
Further, can also regenerative braking force select switch be set on brake pedal, chaufeur according to the driving habit of oneself and can travel the strong and weak scope that road conditions regulate required regenerative braking force, and regenerative braking force select switch can be set to cut out (OFF), weak, medium, strong fourth gear.Because brake pedal has stroke sensor and switch position signal simultaneously, full-vehicle control unit can the braking intention of more accurate perception chaufeur, controls the size of regenerating braking energy more accurately.
Reclaimed by braking energy of electric automobiles, appropriate design brakig force distribution control policy, makes full use of the energy, and battery-driven car can be made to increase continual mileage to greatest extent.
Fig. 3 is the regenerative braking energy reclaiming system schematic diagram that the embodiment of the present invention provides, as shown in Figure 3, use the brake pedal with stroke sensor, make brake pedal the brake deceleration intention of chaufeur accurately can be detected, and acceleration pedal form the major control incoming signal of regenerating braking energy take-back strategy.This case have also been devised the regenerative braking force select switch of restriction regenerative braking force scope, regenerative braking moment scope is divided into by force, in, weak third gear, according to the custom of driver and road conditions choice for use or regenerating braking energy recovery function can be closed, improve drive safety, traveling comfort.Under regenerating braking energy take-back model, full-vehicle control unit 1 can by CAN collect from the hydraulic braking force signal of ESC8 and ABS4 whether actuating signal (i.e. actuation signal), from the cell operating status signal of battery management system (BMS) 3 and the maximum permission charging current signal of electrokinetic cell, from the motor current torque signal etc. of electric machine controller 2.Travel that medium power battery connects that normal and electrokinetic cell SOC is less than 95% at vehicle, acceleration pedal loosen drop to 30% within or step on brake pedal, regenerative braking force select switch is not at OFF shelves, driving switch is D shelves, Control Strategy for Regenerative Braking works, and Control Strategy for Regenerative Braking is illustrated by Fig. 4.
Fig. 4 is that the regenerating braking energy that the embodiment of the present invention provides reclaims control flow chart, and as shown in Figure 4, step comprises:
Step S401: input step.
Input the signal, the hydraulic braking moment of hydraulic brake system, gear PRND, complete vehicle fault state, electrokinetic cell SOC, the maximum permission charging current of electrokinetic cell, ABS mode of operation etc. of switch sensor of the signal gathered from the stroke sensor on the signal of regenerative braking force select switch, acceleration pedal, signal that stroke sensor on brake pedal gathers, brake pedal.
Step S402: judge whether electronlmobil current state meets following condition: braking force select switch is not OFF, and range state is D gear, and electrokinetic cell SOC is less than 95%, ABS mode of operation for not start.When judging that electronlmobil current state meets above-mentioned condition, performing step S403, otherwise exiting Brake energy recovery master mode.
Step S403: judge whether electronlmobil current state meets following condition: acceleration pedal has the trend of unclamping and is less than 30%, and brake pedal switch is for closing.When judging that the opening degree of acceleration pedal is less than 30% and brake pedal does not work, performing step S404, otherwise exiting Brake energy recovery master mode.
Step S404: obtain vehicle speed signal, table look-up according to vehicle speed signal and obtain drive motor lock torque size, i.e. regenerative braking torque.
Step S405: judge whether electronlmobil current state meets following condition: acceleration pedal discharges completely, brake pedal switch is opened (on), braking distance (i.e. the opening degree of brake pedal) and is greater than 0.When acceleration pedal of electric automobile discharge completely, brake pedal switch opened and braking distance is greater than 0 time, perform step S407, otherwise perform step S406.
Step S406: judge whether chaufeur maintains braking intention (i.e. deceleration intention), if so, then performs step S404, otherwise exits Brake energy recovery master mode.
Step S407: table look-up according to the brake pedal degree of depth and obtain demand lock torque size (i.e. total braking force square).
Step S408: lock torque according to demand, computation requirement braking force.
Step S409: table look-up according to the speed of a motor vehicle and obtain regenerative braking moment, and according to regenerative braking moment, calculate regenerative braking force.
Step S410: drive motor carries out energy regenerating to regenerative braking force.
Step S411: deduct regenerative braking force with demand braking force, obtain hydraulic braking force.
Step S412: hydraulic braking force is passed to hydraulic brake system, hydraulic brake system also can utilize master cylinder pressure sensor gather hydraulic braking force signal and carry out information feed back to full-vehicle control unit simultaneously.
Step S413: hydraulic brake system output hydraulic pressure braking force, utilizes friction force to brake.
In other words, in Fig. 4, signal input gives the condition that braking energy of electric automobiles reclaims master mode startup, in fundamental sum Fig. 1 to Fig. 3, listed condition is identical, and when each condition meets, electronlmobil enters Brake energy recovery pattern under the control of full-vehicle control unit 1.Energy regenerating controls to be divided into two stages.
First stage, chaufeur pine acceleration pedal applies deceleration intention to vehicle, when acceleration pedal opening degree is less than 30% (brake pedal does not also work), full-vehicle control unit stops exporting driving torque, brake torque is sent to electric machine controller, drive motor is converted to electrical generator, 95% is less than and under maximum charging current enabled condition at electrokinetic cell SOC, full-vehicle control enters regenerating braking energy take-back model, feedback energy charging is carried out to electrokinetic cell, chaufeur can experience braking effect this moment, speed of a motor vehicle downswing can be controlled by regenerative braking force select switch.If now chaufeur has acceleration intention and acceleration pedal aperture to increase once again, then full-vehicle control exits braking mode.
Subordinate phase, acceleration pedal discharges completely, full-vehicle control unit 1 detects brake pedal switch signal, according to the total braking force collecting brake-pedal-travel sensor calculated signals car load braking needs, then the braking force size that this moment can be provided by motor is provided to greatest extent, motor produces brake torque, and the braking force size being deducted motor can be provided by total braking force draws the hydraulic braking force of needs, draws the hydraulic pressure output of traditional braking liner.Full-vehicle control unit 1 needs flexible allocation hydraulic braking force and regenerative braking force according to car load, regenerative braking force is utilized to carry out energy regenerating to greatest extent, implement regenerative braking torque by electric machine controller 2 to control, controlled the hydraulic pressure size be applied in brake lining by ESC8.Owing to being applied with motor braking in braking procedure, the hydraulic pressure be applied in brake lining is obviously less than the automobile not having motor regenerative braking capability, thus can extends the service life of brake lining.
Fig. 5 gives under Brake energy recovery pattern, the relation of regenerative braking torque and braking force switch, acceleration pedal, the clear control trend indicating the regenerative braking torque that Brake energy recovery applies in different phase.
In sum, the present invention has following technique effect:
1, the switching regulator pedal that current most of electronlmobil uses is improved to the brake pedal having distance position sensor concurrently by the present invention, can the deceleration intention of accurate perception chaufeur;
2, full-vehicle control unit has the function of distributing hydraulic braking force and regenerative braking force;
3, the present invention starts the strategy of energy regenerating when acceleration pedal is released into below 30%, can suppress to produce the hidden danger such as road speed goes up not down, reduction of speed is not obvious in short-term due to slow release the gas pedal.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (10)
1. a regenerating braking energy recycling and control method, is characterized in that, comprising:
Obtain the opening degree data of the gear signal of the electronlmobil in travelling, acceleration pedal or brake pedal;
Judge whether the gear signal obtained is advance gear signal;
If described gear signal is advance gear signal, then according to the opening degree data of described acceleration pedal or brake pedal, the deceleration intention of chaufeur is judged;
When determining the deceleration intention of chaufeur, obtaining the state of charge data of electric automobile power battery, and according to described state of charge data, converting the regenerating braking energy of electronlmobil to electric energy, and be stored in electrokinetic cell.
2. method according to claim 1, is characterized in that, describedly comprises the step that the deceleration intention of chaufeur judges:
The opening degree data of collected acceleration pedal and default acceleration pedal opening degree threshold value are compared;
When the opening degree data of collected acceleration pedal are less than described default acceleration pedal opening degree threshold value, determine the deceleration intention of chaufeur.
3. method according to claim 2, is characterized in that, described according to described state of charge data, convert the regenerating braking energy of electronlmobil to electric energy, and the step be stored in electrokinetic cell comprises:
When described state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed;
In the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the described speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to described regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
4. method according to claim 1, is characterized in that, describedly comprises the step that the deceleration intention of chaufeur judges:
When the opening degree data of collected brake pedal are greater than zero, determine the deceleration intention of chaufeur.
5. method according to claim 4, is characterized in that, described according to described state of charge data, convert the regenerating braking energy of electronlmobil to electric energy, and the step be stored in electrokinetic cell comprises:
Described state of charge data and default state of charge data threshold are compared;
When described state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed;
In the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the described speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to described regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
6. method according to claim 5, is characterized in that, also comprises:
In the total braking force mapping table preset, search the total braking force square corresponding with the opening degree data of described brake pedal;
Utilize described total braking force square and regenerative braking moment data, calculate hydraulic braking moment;
Hydraulic braking moment is sent to electronic stabilizing control system, controls the hydraulic braking force be applied in the brake lining of hydraulic brake system for described electronic stabilizing control system according to described hydraulic braking moment.
7. the method according to claim 1-6 any one, is characterized in that, also comprises:
During converting the regenerating braking energy of electronlmobil to power storage to electrokinetic cell, the starting state of the anti-lock brake system of electronlmobil is detected;
When detecting that described anti-lock brake system starts, stop the regenerating braking energy of conversion electronlmobil.
8. a regenerating braking energy recovery control device, is characterized in that, comprising:
Data acquisition module, for obtaining the opening degree data of the gear signal of the electronlmobil in traveling, acceleration pedal or brake pedal;
First judge module, for judging whether obtained gear signal is advance gear signal;
Second judge module, for when described first judge module judges that gear signal is advance gear signal, according to the opening degree data of described acceleration pedal or brake pedal, judges the deceleration intention of chaufeur;
Energy recovery module, for when determining the deceleration intention of chaufeur, obtaining the state of charge data of electric automobile power battery, and according to described state of charge data, converting the regenerating braking energy of electronlmobil to electric energy, and be stored in electrokinetic cell.
9. device according to claim 8, is characterized in that, described data acquisition module comprises:
Be arranged on the first stroke sensor on acceleration pedal, be used for gathering the opening degree data of described acceleration pedal, for the second judge module when determining that the opening degree data of collected acceleration pedal are less than described default acceleration pedal opening degree threshold value, determine the deceleration intention of chaufeur;
Be arranged on the second stroke sensor on brake pedal, be used for gathering the opening degree data of described brake pedal, for the second judge module when determining that the opening degree data of collected brake pedal are greater than zero, determine the deceleration intention of chaufeur.
10. device according to claim 9, it is characterized in that, described state of charge data and default state of charge data threshold compare by described energy recovery module, when described state of charge data are less than default state of charge data threshold, obtain electronlmobil current vehicle speed, in the regenerative braking moment mapping table preset, search the regenerative braking moment data corresponding with the described speed of a motor vehicle, and the regenerative braking moment data found are sent to electric machine controller, for electric machine controller according to described regenerative braking torque data, convert the regenerating braking energy that motor produces to electric energy, be stored in electrokinetic cell.
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