CN101402360A - Power generation control method for motor of hybrid power automobile - Google Patents
Power generation control method for motor of hybrid power automobile Download PDFInfo
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- CN101402360A CN101402360A CNA2007101243072A CN200710124307A CN101402360A CN 101402360 A CN101402360 A CN 101402360A CN A2007101243072 A CNA2007101243072 A CN A2007101243072A CN 200710124307 A CN200710124307 A CN 200710124307A CN 101402360 A CN101402360 A CN 101402360A
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- 238000010248 power generation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000007600 charging Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 33
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 3
- 230000009194 climbing Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001141 propulsive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention relates to a method for controlling power generation of a motor of a hybrid motor vehicle. The method comprises the following steps: firstly, the system status is monitored and judgment is made whether the current system status forbids power generation or not, wherein the torque moment for driving the motor to generate power is set to be zero if the current system status forbids power generation, otherwise the next step is executed; secondly, judgment is made whether an engine is in the idle speed state and an electrokinetic cell needs charging, and the engine torque moment and the motor torque moment are distributed, wherein the torque moment required by the engine minus the torque moment required by the motor for power generation equals the torque moment required by the whole vehicle; and thirdly, an engine torque moment instrument and a motor torque moment instrument are outputted according to the judgment. Because a hybrid controller continuously monitors the operating condition and judges different conditions in time, the opportunity for power generation can be found out at any moment, more opportunities for recovering the energy are obtained, and the electric energy can be reasonably utilized to provide driving force for the vehicle to improve the performance of the vehicle and reduce the oil consumption and the carbon emission.
Description
Technical field
The present invention relates to power generation control method for motor of hybrid power automobile.
Background technology
Since the nineties, Japan, the U.S., each big car company of Europe begin to develop the mixed motivity type automobile one after another.Since Japanese Toyota Company took the lead in releasing hybrid power car in 1997, each big car company comprised that Honda, general, Ford, D-C and french citroen etc. all release or developed production car or notion sample car.The expert thinks in following 10 years, has 40% automobile and all will adopt the hybrid power technology, and hybrid vehicle has huge development prospect.Hybrid vehicle can change into electric energy with kinetic energy by motor, stores in the closed-center systems such as electrokinetic cell; Existing power generation control method for motor of hybrid power automobile can not make motor can rationally utilize these electric energy to come to provide propulsive effort for vehicle according to work condition states such as vehicle launch, acceleration, climbings, thereby improves the performance of vehicle, reduces oil consumption, emission abatement.
Summary of the invention
The present invention proposes a kind of power generation control method for motor of hybrid power automobile, can not to make motor can rationally utilize these electric energy according to work condition states such as vehicle launch, acceleration, climbings be that vehicle provides propulsive effort to solve existing power generation control method for motor of hybrid power automobile, thereby improve the performance of vehicle, reduce oil consumption, the technical matters of emission abatement.
In order to solve above technical matters, the technical scheme that the present invention takes is:
A kind of power generation control method for motor of hybrid power automobile is characterized in that, may further comprise the steps:
(1) system status is monitored, judge whether current system condition forbids generating, if forbid generating, the then moment of torsion zero setting that drive motor is generated electricity, otherwise enter next step;
(2) judge whether driving engine is in idling mode and electrokinetic cell whether needs charging to carry out engine torque and Motor torque distributes, wherein, the moment of torsion that the car load required torque=driving engine required torque-motor generates electricity:
If be in idling mode and judge that electrokinetic cell needs charging, the power generation torque of then adjusting drive motor equates with engine output torque, if be in idling mode and judge that electrokinetic cell does not need charging, then adjust the drive motor moment of torsion electric power of electrical equipment on its generated output and the car is equated;
If not be in idling mode and judge that electrokinetic cell needs charging, then pay the utmost attention to the power generation torque of heightening drive motor and give power battery charging, if not be in idling mode and judge that electrokinetic cell does not need charging, then preferentially satisfies engine efficiency and adjusts the drive motor power generation torque again;
(3) according to above-mentioned judgement output engine torque command and Motor torque instruction.
Describedly judge whether current system condition forbids that the determination methods of generating electricity is, when following arbitrary situation occurring, all forbid generating electricity:
A) when the inverter temperature is higher than a certain threshold value,
B) when battery temp is lower than a certain threshold value,
C) when battery SOC is higher than a certain threshold value,
D) when disconnecting between battery and the motor,
E) when the ABS of vehicle system is working,
When f) driving engine will the continuous working period be less than a certain threshold value after startup.
Also continue to adjust after described step (two) is finished and obtain engine torque and Motor torque carries out smoothing processing.
Describedly judge whether electrokinetic cell needs electrically-charged method to be: when the SOC of electrokinetic cell is the needs chargings during less than a certain threshold X, when the SOC of electrokinetic cell charges for not needing during greater than a certain threshold X.
It is after described step (two) obtains engine torque and Motor torque, further comprising the steps of: if engine torque, is then forbidden Motor torque zero setting generating less than threshold value Z.
It is after described step (two) obtains engine torque and Motor torque, further comprising the steps of: if Motor torque, is then forbidden Motor torque zero setting generating less than threshold value Y.
After having adopted technique scheme, because hybrid controller is constantly monitored operating condition, different situations is in time judged the chance that to generate electricity to find at any time, obtain the chance of more recuperated energies, having solved existing power generation control method for motor of hybrid power automobile can not make motor can rationally utilize these electric energy to come to improve the performance of vehicle for vehicle provides propulsive effort according to work condition states such as vehicle launch, acceleration, climbings, reduce oil consumption, the technical matters of emission abatement.Unclamp throttle as chaufeur, and/or when stepping on brake pedal, can control motor and generate electricity.Whether hybrid controller also wants other condition of monitoring system to allow motor to generate electricity simultaneously, maybe need whether to allow generating as the SOC of battery, and whether the temperature of each system etc. are normal etc.In conditions permit, can allow engine operation surpass car load and travel and move under the operating mode that requires at efficient, anti-emission carburetor, output torque, unnecessary driving torque then can be used for drive motor and generate electricity.When high the arriving to a certain degree of the SOC of battery, then can allow engine operation under the operating mode of efficient, anti-emission carburetor, low moment of torsion, move, this moment, motor utilized the electric energy of electrokinetic cell to drive, the moment of torsion of apprentice's deficiency.So just can allow engine operation in zone efficient, anti-emission carburetor always, improve the fuel economy of car load.
Description of drawings
Fig. 1 is the driver train connection diagram of the hybrid vehicle that the present invention relates to.
Fig. 2 is that the control system of the hybrid vehicle that the present invention relates to is electrically connected scheme drawing.
Fig. 3 is the signal flow diagram that the present invention realizes electricity generate function.
Fig. 4 realizes diagram of circuit of the present invention.
The specific embodiment
Motor and driving engine among the present invention are illustrated in figure 1 as coaxial arrangement, one section of motor links to each other with engine crankshaft, the other end links to each other with change speed gear box by power-transfer clutch, and motor is that electric generator/electric motor is incorporate, and its mode of operation is controlled by hybrid controller and electric machine controller.The signal flow that is electrically connected and realizes electricity generate function of control system is shown in Fig. 2,3.Control method of the present invention may further comprise the steps as shown in Figure 4:
A kind of power generation control method for motor of hybrid power automobile may further comprise the steps:
(1) system status is monitored, judges whether current system condition forbids generating, judges whether current system condition forbids that the determination methods of generating electricity is, when arbitrary situation below the appearance, all forbid generating:
A) when the inverter temperature is higher than a certain threshold value,
B) when battery temp is lower than a certain threshold value,
C) when battery SOC is higher than a certain threshold value,
D) when disconnecting between battery and the motor,
E) when the ABS of vehicle system is working,
When f) driving engine will the continuous working period be less than a certain threshold value after startup.
If forbid generating, the then moment of torsion zero setting that drive motor is generated electricity, otherwise enter next step;
(2) judge whether driving engine is in idling mode and electrokinetic cell whether needs charging to carry out engine torque and Motor torque distributes, wherein, the moment of torsion that the car load required torque=driving engine required torque-motor generates electricity:
If be in idling mode and judge that electrokinetic cell needs charging, the power generation torque of then adjusting drive motor equates with engine output torque, if be in idling mode and judge that electrokinetic cell does not need charging, then adjust the drive motor moment of torsion electric power of electrical equipment on its generated output and the car is equated;
If not be in idling mode and judge that electrokinetic cell needs charging, then pay the utmost attention to the power generation torque of heightening drive motor and give power battery charging, if not be in idling mode and judge that electrokinetic cell does not need charging, then preferentially satisfies engine efficiency and adjusts the drive motor power generation torque again;
Wherein, judge whether electrokinetic cell needs electrically-charged method to be: when the SOC of electrokinetic cell is the needs chargings during less than a certain threshold X, when the SOC of electrokinetic cell charges for not needing during greater than a certain threshold X,
(3) obtain engine torque and Motor torque after, if engine torque less than threshold value Z or Motor torque less than threshold value Y, then Motor torque zero setting is forbidden generating.
(4) adjustment is obtained engine torque and Motor torque and carry out smoothing processing.
(5) according to above-mentioned judgement output engine torque command and Motor torque instruction.
After having adopted said method, hybrid controller is monitored the operating condition of vehicle, in time to find the chance that can generate electricity.When unclamping throttle as chaufeur, and other conditions permit, just can control motor and generate electricity.Brake, situations such as engine idle can allow motor generate electricity, and convert kinetic energy to power storage in electrokinetic cell.Acquire a certain degree as unclamping Das Gaspedal, just allow motor to generate electricity when chaufeur.Can obtain the greater power generation chance like this, improve the quantity of energy recovery.If the present situation allows to generate electricity, and driving engine is in idling conditions, if battery SOC less than a certain threshold value, then the whole output torques driving driving engines with driving engine generate electricity.If generator for electricity generation is that driving engine is in idling operation, and the SOC of electrokinetic cell then needs to improve the rotating speed of engine idle less than a certain threshold value, to improve the efficient of generated output and driving engine.If motor generates electricity during engine idle, and the SOC of electrokinetic cell is greater than a certain threshold value, and promptly electrokinetic cell does not need charging, then should adjust the moment of torsion that drive motor generates electricity, and allows the electric power of electrical equipment equates on generated output and the car of motor.The SOC of battery is driven and generates electricity when driving engine is in the running state of non-idling and motor, if greater than a certain threshold value, then should pay the utmost attention to the efficient of driving engine.By this principle recomputate moment of torsion that driving engine should export and and should spend the moment of torsion that generates electricity at drive motor so that make engine operation under the state of high efficiency, anti-emission carburetor, high pulling torque, the moment of torsion that exceeds vehicle needs can be used for generating electricity.The SOC of battery is driven and generates electricity when driving engine is in the running state of non-idling and motor, if less than a certain threshold value, then should preferentially replenish the electric weight of electrokinetic cell.The SOC of battery is low more, and it is big more then to need to be used for the moment of torsion that drive motor generates electricity.The moment of torsion that drive motor generates electricity does not allow to occur step to be changed, and prevents to impact system caused to damage and/or the traveling comfort of car load is impacted.Do not allow to require engine output torque to be lower than a certain threshold value, too low to avoid driving engine to cross under the operating mode of low moment of torsion efficient, and might cause engine off.The moment of torsion that does not allow drive motor to generate electricity is lower than a certain threshold value, and low excessively moment of torsion office can make efficiency of motor very low.Be set to zero by the moment of torsion that will require this moment and forbid generating.
Claims (6)
1, a kind of power generation control method for motor of hybrid power automobile is characterized in that, may further comprise the steps:
(1) system status is monitored, judge whether current system condition forbids generating, if forbid generating, the then moment of torsion zero setting that drive motor is generated electricity, otherwise enter next step;
(2) judge whether driving engine is in idling mode and electrokinetic cell whether needs charging to carry out engine torque and Motor torque distributes, wherein, the moment of torsion that the car load required torque=driving engine required torque-motor generates electricity:
If be in idling mode and judge that electrokinetic cell needs charging, the power generation torque of then adjusting drive motor equates with engine output torque, if be in idling mode and judge that electrokinetic cell does not need charging, then adjust the drive motor moment of torsion electric power of electrical equipment on its generated output and the car is equated;
If not be in idling mode and judge that electrokinetic cell needs charging, then pay the utmost attention to the power generation torque of heightening drive motor and give power battery charging, if not be in idling mode and judge that electrokinetic cell does not need charging, then preferentially satisfies engine efficiency and adjusts the drive motor power generation torque again;
(3) according to above-mentioned judgement output engine torque command and Motor torque instruction.
2, power generation control method for motor of hybrid power automobile as claimed in claim 1 is characterized in that, describedly judges whether current system condition forbids that the determination methods of generating electricity is, when following arbitrary situation occurring, all forbids generating electricity:
A) when the inverter temperature is higher than a certain threshold value,
B) when battery temp is lower than a certain threshold value,
C) when battery SOC is higher than a certain threshold value,
D) when disconnecting between battery and the motor,
E) when the ABS of vehicle system is working,
When f) driving engine will the continuous working period be less than a certain threshold value after startup.
3, power generation control method for motor of hybrid power automobile as claimed in claim 1 is characterized in that, also continue to adjust after described step (two) is finished to obtain engine torque and Motor torque carries out smoothing processing.
4, hybrid powder motor electricity-generating control method as claimed in claim 1, it is characterized in that, judge whether electrokinetic cell needs electrically-charged method to be: when the SOC of electrokinetic cell is the needs chargings during less than a certain threshold X, when the SOC of electrokinetic cell charges for not needing during greater than a certain threshold X.
5, hybrid powder motor electricity-generating control method as claimed in claim 2, it is characterized in that, it is after described step (two) obtains engine torque and Motor torque, further comprising the steps of: if engine torque, is then forbidden Motor torque zero setting generating less than threshold value Z.
6, power generation control method for motor of hybrid power automobile as claimed in claim 2, it is characterized in that, it is after described step (two) obtains engine torque and Motor torque, further comprising the steps of: if Motor torque, is then forbidden Motor torque zero setting generating less than threshold value Y.
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| CNA2007101243072A CN101402360A (en) | 2007-10-30 | 2007-10-30 | Power generation control method for motor of hybrid power automobile |
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| CN101700772A (en) * | 2009-11-16 | 2010-05-05 | 北汽福田汽车股份有限公司 | Electric control method and system of automobile and engine controller |
| CN102126496A (en) * | 2011-01-24 | 2011-07-20 | 浙江大学 | Parallel hybrid management control system and management control method thereof |
| CN102582611A (en) * | 2011-01-18 | 2012-07-18 | 上海汽车集团股份有限公司 | Power generation control device and power generation control method for automobiles |
| CN101648511B (en) * | 2009-09-04 | 2012-11-28 | 奇瑞汽车股份有限公司 | Control method of engine speed of hybrid car in generating state |
| CN103052781A (en) * | 2010-08-23 | 2013-04-17 | 卡明斯公司 | Hybrid power train rate control |
| CN103183021A (en) * | 2011-12-30 | 2013-07-03 | 上海汽车集团股份有限公司 | Method for controlling electric discharge torque of drive motor |
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| CN101700772A (en) * | 2009-11-16 | 2010-05-05 | 北汽福田汽车股份有限公司 | Electric control method and system of automobile and engine controller |
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Application publication date: 20090408 |