CN109353330A - A kind of hybrid vehicle, operating mode control system and its method - Google Patents
A kind of hybrid vehicle, operating mode control system and its method Download PDFInfo
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- CN109353330A CN109353330A CN201811289450.1A CN201811289450A CN109353330A CN 109353330 A CN109353330 A CN 109353330A CN 201811289450 A CN201811289450 A CN 201811289450A CN 109353330 A CN109353330 A CN 109353330A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0666—Engine power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/085—Power
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention discloses a kind of operating mode control methods of hybrid vehicle, comprising: obtains the available driving power of driving motor under series drive mode after vehicle launch；Judge whether that meeting driver drives demand power according to the available driving power of the driving motor；Judge that, when engine direct drives, the driver drives whether demand power can allow the engine to enter high efficient district under current vehicle speed；Judge whether the straight drive power of the engine under current vehicle speed meets the unattenuated requirement of vehicle dynamic property；The operating mode for switching the vehicle is parallel drive mode.The above method ensure that the economy with vehicle is not lost in vehicle dynamic property by the switching time of decision vehicle operation mode.The present invention also provides a kind of operating mode control devices of hybrid vehicle, and the present invention also provides a kind of hybrid vehicles.
Description
Technical field
The present invention relates to the control method of automotive power, in particular to a kind of hybrid vehicle, operating mode control
System and method processed.
Background technique
The power system operational mode control method of existing hybrid vehicle, main SOC according to power battery and
The speed of vehicle controls the drive mode of hybrid vehicle, but SOC can not embody completely power battery and really discharge
Ability, such as identical SOC (- 25 DEG C, 25 DEG C, 50 DEG C) under different temperatures environment, are influenced by the characteristic of battery modules itself,
The discharge capability of power battery will there were significant differences, therefore relies solely on the SOC of power battery to determine hybrid vehicle
The switching time of power system operational mode can not achieve the effect that vehicle dynamical system efficiency optimization or dynamic property are optimal.
Therefore, how to provide it is a kind of according to vehicle real-time running state carry out to its operating mode switching time judge
Method, the problem of being those skilled in the art's urgent need to resolve.
Summary of the invention
The object of the present invention is to provide a kind of operating mode control methods of hybrid vehicle, comprising:
Obtain the available driving power of driving motor under series drive mode after vehicle launch；
Judge whether that meeting driver drives demand power according to the available driving power of the driving motor, if so,
It performs the next step；
Judge when engine direct drives, the driver drives whether demand power can allow described start under current vehicle speed
Machine enters high efficient district, if so, performing the next step；
Judge whether the straight drive power of the engine under current vehicle speed meets the unattenuated requirement of vehicle dynamic property, if so,
Then perform the next step；
The operating mode for switching the vehicle is parallel drive mode.
Preferably, when engine direct drives, whether the driver drives demand power that can under current vehicle speed for the judgement
After the step of enough allowing the engine to enter high efficient district, further includes:
If the engine can not enter high efficient district, then keeping the operating mode of the vehicle is tandem drive mould
Formula.
Preferably, whether the straight drive power for judging the engine under current vehicle speed it is unattenuated meet vehicle dynamic property
It is required that the step of after, further includes:
If the straight drive power of the engine is unsatisfactory for the unattenuated requirement of vehicle dynamic property, then the work of the vehicle is kept
Operation mode is series drive mode.
Preferably, the available driving power according to the driving motor judges whether that meeting driver drives demand function
After the step of rate, further includes:
If the available driving power of the driving motor is unsatisfactory for the driver and drives demand power, the drive is judged
Whether the available driving power of dynamic motor is more than or equal to the available discharge power of battery, if so, performing the next step；
Judge the difference of the available discharge power of the available driving power and battery of the driving motor under current vehicle speed
Whether the minimum value both in value and the actual generation power of generator is less than or equal to the straight drive power of the engine, if so,
Then perform the next step；
The operating mode for switching the vehicle is parallel drive mode.
Preferably, the available driving power of the driving motor is put with the available of the battery under the judgement current vehicle speed
Whether the minimum value both in the difference of electrical power and the actual generation power of generator is less than or equal to the straight drive of the engine
After the step of power, further includes:
If it is not, then keeping the operating mode of the vehicle is series drive mode.
Preferably, whether the available driving power for judging driving motor is more than or equal to the available discharge power of battery
After step, further includes:
If the available driving power of the driving motor is less than the available discharge power of the battery, current vehicle speed is judged
Under the straight drive power of the engine whether be greater than the available driving power of the driving motor, if so, performing the next step；
The operating mode for switching the vehicle is parallel drive mode.
Preferably, what whether the straight drive power for judging the engine under current vehicle speed was greater than the driving motor can
After the step of driving power, further includes:
If it is not, then keeping the operating mode of the vehicle is series drive mode.
Preferably, whether the straight drive power for judging the engine under current vehicle speed it is unattenuated meet vehicle dynamic property
It is required that the step of specifically:
Judge the driver under current vehicle speed drive the available discharge power of demand power and the battery difference and
Whether the minimum value both in the actual generation power of the generator is less than or equal to the straight drive power of the engine.
The present invention also provides a kind of operating mode control systems of hybrid vehicle, comprising:
For obtaining the acquisition module of the available driving power of driving motor under series drive mode after vehicle launch；
The starting of demand power is driven to sentence for judging whether the available driving power of the driving motor meets driver
Disconnected module；
For judging that, when engine direct drives, the driver drives demand power whether can allow described under current vehicle speed
Engine enters the intermediate range judgment module of high efficient district；
Whether the straight drive power for engine described under current vehicle speed meets the final of the unattenuated requirement of vehicle dynamic property
Judgment module.
The present invention also provides a kind of hybrid vehicle, the operating mode control system including above-mentioned hybrid vehicle.
Relative to above-mentioned background technique, the present invention provides a kind of operating mode control methods of hybrid vehicle, obtain
An available driving power for driving motor when pick-up is under series drive mode；Pass through the available driving power to driving motor
Prerequisite judgement, determine under current series drive mode driving motor completely can independent towing vehicle still need to start
Power-assisted is added in machine；When driving motor can independently be drawn completely, further judgement if engine direct drive power-assisted, if current vehicle speed
Can lower driver drive demand power that engine be allowed to enter high efficient district, that is, guarantees starting for if engine direct drives power-assisted vehicle
Machine efficiency with higher and performance；When engine is able to enter high efficient district, that is, it ensure that the premise of the transformation efficiency of engine
Under, judge whether the straight drive power of engine meets the unattenuated requirement of vehicle dynamic property, is switched to parallel drive mould if meeting
Formula, i.e. guarantee vehicle from series drive mode be switched to parallel drive mode after vehicle will not dynamic property decaying, vehicle is dynamic
Force system efficiency optimization.The operating mode control method of above-mentioned hybrid vehicle is by originating, intermediate range judges with final three step,
The efficient of demand power, the straight drive power of engine and engine is driven according to the available driving power of driving motor, driver
Area judges that vehicle is switched to the switching time of parallel drive mode by series drive mode, meets switching time and switches over work
The vehicle of operation mode can achieve the effect that switching front and back dynamic property does not decay and vehicle dynamical system efficiency optimization.
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 the structural schematic diagram of the dynamical system of hybrid vehicle provided by the embodiment of the present invention；
Fig. 2 is the flow chart of the operating mode control method of hybrid vehicle provided by the embodiment of the present invention；
Fig. 3 is the operating mode control system schematic diagram of hybrid vehicle provided by the embodiment of the present invention.
Wherein:
Fig. 1: 1- generator, 2- gearbox, 3- engine, 4- driving motor/engine integrated form inverter, 5- driving electricity
Machine, 6- power battery, 7- drive shaft, 8- driving wheel, 9- clutch；
Fig. 3: 10- obtains module, 20- originates judgment module, 30- intermediate range judgment module, the final judgment module of 40-.
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.
In order to make those skilled in the art more fully understand the present invention program, with reference to the accompanying drawing and it is embodied
The present invention is described in further detail for mode.
Fig. 1 to Fig. 3 is please referred to, Fig. 1 is the structure of the dynamical system of hybrid vehicle provided by the embodiment of the present invention
Schematic diagram, Fig. 2 are the flow chart of the operating mode control method of hybrid vehicle provided by the embodiment of the present invention, and Fig. 3 is
The operating mode control system schematic diagram of hybrid vehicle provided by the embodiment of the present invention.
Referring to FIG. 1, Fig. 1 is the structural representation of the dynamical system of hybrid vehicle provided by the embodiment of the present invention
Figure,
The dynamical system of the hybrid vehicle of the present embodiment as shown in Figure 1 includes driving unit, power battery 6 and control
The entire car controller (entire car controller not drawn in the figure) of driving unit processed.
Wherein, driving unit mainly includes generator 1, gearbox 2, engine 3 and driving motor 5, and gearbox 2 connects simultaneously
Be responsible for each power source of driving unit power coupling and transmission gear shift, driving motor 5 by gearbox 2 always with drive shaft 7 with
And driving wheel 8 keeps connection, engine 3 is remained also by gearbox 2 with generator 1 and is connect.Driving motor 5 and generator
1 is that ISG motor, driving motor 5 and generator 1 are real by driving motor/generator integrated form inverter 4 and power battery 6
Now it is electrically connected.
In addition, entire car controller is also connected with the accelerator pedal position sensor of vehicle, brake pedal position sensor, and
With engine management system, gear box control unit, battery management system, driving motor/generator integrated form inverter 4, electricity
The vehicle electronics such as sub- stability program management system carries out the interaction (not drawn in the figure) of information by CAN network.
In the operation work of hybrid vehicle, for series drive mode and parallel drive mode and can be two
For the hybrid vehicle switched between person, two kinds of operating modes are completely motionless.Under series drive mode, engine
The drive generator 1 of 3 selectivity works, and generator 1 and power battery 6 pass through driving motor/4 band of generator integrated form inverter
Dynamic driving motor 5 operates, and driving motor 5 is connect to realize the driving to vehicle with drive shaft 7.It should be noted that when being in
When series drive mode, engine 3 can drive generator 1 to drive driving motor 5 or generator 1 to power from generator 1 again
6 energy storage of battery can also only be powered from power battery 6 to driving motor 5, but no matter vehicle is in the driving of which kind of mode
Under, engine 3 does not participate directly in in the driving to vehicle, i.e., engine 3 does not directly drive, but in an indirect way
Pass through other energy transform modes to generator 1, then by generator 1 to drive vehicle traction.However in parallel drive mode
Under, engine 3 is participated in as independent driving unit in the directly driving of vehicle.It is to be understood that engine 3 is defeated
Power can be with some still as series drive mode provides mechanical energy, but some necessary power to generator 1 out
It participates directly in the driving to drive shaft 7, i.e. the engine 3 of the vehicle under parallel drive mode directly drives vehicle
?.Specifically, clutch 9 disconnects when vehicle is under series drive mode, engine 3 drives power generation by mechanical connection
Machine 1 operates, and disconnects with drive shaft 7；When vehicle is under parallel drive mode, clutch 9 is connected, and engine 3 is not only
Generator 1 can be driven to operate by mechanical connection, and can also directly be connect by mechanical connection with drive shaft 7 to realize
Vehicle is directly driven.
In the first embodiment, the operating mode control method of hybrid vehicle disclosed in this invention includes:
S10, the available driving power for obtaining driving motor 5 under series drive mode after vehicle launch；
S20, judge whether that meeting driver drives demand power according to the available driving power of driving motor 5；
S31, judge when engine 3 directly drives, driver drives whether demand power can allow engine 3 under current vehicle speed
Into high efficient district；
S41, judge whether the straight drive power of engine 3 under current vehicle speed meets the unattenuated requirement of vehicle dynamic property；
S50, the operating mode for switching vehicle are parallel drive mode.
In the present embodiment, vehicle is started by step S10 and switches to series drive mode, acquire vehicle in real time
Driving motor 5 available driving power, subsequently into next step S20.It should be noted that in step slo about vehicle
Starting mode can be driver and be also possible to remote control to electricity, specifically should according to the actual situation and be transported using which kind of mode
It is configured with the prior art；In the present invention, the available driving power of driving motor 5 be entire car controller by driving motor/
Generator integrated form inverter 4 is assessed in real time according to factors such as the revolving speed of driving motor 5, electric system temperature, malfunctions
The revolving speed calculating of 5 maximum available torque of driving motor, driving motor 5, represents itself the maximum drive of current driving motor 5
Kinetic force.Wherein, the available discharge power of power battery 6 is by battery management system according to battery temperature, voltage, SOC and electricity
The factors such as pond health status are estimated, and are sent to entire car controller by CAN.Creation is not paid in those skilled in the art
Property labour under the premise of can also obtain the available driving power of driving motor 5 indirectly by obtaining other parameters, but belong to
In explanation and protection scope of the invention.
Judge whether the available driving power of driving motor 5 meets driver and drive demand power in step S20, that is, drives
Whether the available driving power of dynamic motor 5, which is more than or equal to driver, drives demand power.Specifically, working as driver actuation
Afterwards, it is stepped on the gas by foot to control the driving unit of vehicle, thus the foot of driver reflects driver couple to the dynamics of throttle
In current vehicle traveling goal pace, that is, step on it is deeper wish that vehicle can have big tractive force, that steps on more shallowly wishes vehicle
There can be small tractive force.Therefore, it is entire car controller according to accelerator pedal aperture and current that driver, which drives demand power,
The driver that speed is assessed drives demand in real time, represents expectation of the current driver's to vehicle dynamic property.For example,
Driver, which passes through to step on the gas, wishes that the speed of vehicle is promoted to 90 from 70, and the available driving power of driving motor 5 at this time is full
The driving demand of sufficient driver, i.e. driver wish that the speed of vehicle is promoted to 90 from 70, the available driving power of driving motor 5
Meeting the needs of driver makes the speed of vehicle be promoted to 90 from 70.The speed of vehicle depends entirely on operator demand this moment
Power, because even the available power of driving motor 5 is sufficiently large, but satisfaction has been obtained in the drive demand of driver,
Under the premise of driver does not have higher drive demand, the speed of current vehicle is to meet the speed of driver's drive demand.
Therefore, whether the judgement that driver drives demand power is met to the available driving power of driving motor 5 in step S20, when sentencing
When breaking to be, this means that the driving motor 5 under series drive mode has met driver for the control period of vehicle speed
It hopes.
When step S20 is judged as YES, i.e. the available driving power of driving motor 5 meets driver and drives demand power, into
Enter step S31: when engine 3 directly drives, whether driver drives demand power engine 3 can be allowed to enter high under current vehicle speed
Imitate area.It should be noted that it has been learned that the driving motor 5 under series drive mode meets driver's before step S31
Driving expectation, therefore herein under the premise of to judge be added engine 3 directly drive whether meet allow engine 3 enter high efficient district item
It is inefficient to realize the high-efficiency operation of engine 3 that can part, i.e. driver driving demand power allow engine 3 to enter high efficient district
Low conversion.In addition to this, in step S31 to engine 3 directly drive when judgement be it is a kind of calculating and simulation because not switching
For parallel drive mode vehicle in front still in series drive mode, so working as to obtain the effect that engine 3 directly drives
Working speed under preceding speed, by being closed clutch 9, according to 2 speed ratio of gearbox, when determining that engine 3 directly drives.In this base
On plinth, under the premise of the working speed of pre- cicada engine 3, driver drive demand torque, pass through the universal spy of engine 3
Linearity curve can determine that driver drives whether demand power can allow engine 3 to enter high efficient district under current vehicle speed, need
Bright, driver here drives demand power to can be the actual power numerical value for being directly added into calculating, is also possible to represent
Driver drives desired driving demand, should be specifically to be easy to think to those skilled in the art using numerical value or concept
It arrives.
When being judged as YES for step S31, i.e. driver drives demand power that engine 3 can be allowed to enter high efficient district, that is, sends out
Motivation 3, which is directly driven, to be had the characteristics that efficient, then whether the straight drive power for carrying out engine 3 under step S41 current vehicle speed meets vehicle
The unattenuated requirement of dynamic property, if step S41 is judged as YES, i.e., it is dynamic to meet vehicle for the straight drive power of engine 3 under current vehicle speed
The unattenuated requirement of power, the operating mode for entering step S50 switching vehicle is parallel drive mode.
It should be noted that in order to obtain vehicle dynamic property when vehicle switches to parallel drive mode from series drive mode
There is not the technical effect to decay, needs to guarantee that the maximum drive demand power of the vehicle entered after parallel drive mode is greater than
The maximum drive demand power of vehicle when equal to series drive mode.Therefore, when vehicle is switched to simultaneously by series drive mode
The straight drive power of increased engine 3 should meet some requirements after connection drive mode, i.e., the straight drive of engine 3 under current vehicle speed
Whether power meets the unattenuated requirement of vehicle dynamic property.
For superior technique effect, if the straight drive power of engine 3 meets vehicle dynamic property and does not wane under current vehicle speed
Subtract requirement, if the operating mode for then switching vehicle is specially driver's driving under current vehicle speed the step of being parallel drive mode
Minimum value both in the difference of the available discharge power of demand power and battery and the actual generation power of generator 1 is less than
Equal to the straight drive power of engine 3, then the operating mode for switching vehicle is parallel drive mode.
Specifically, comparison engine 3 directly drives forward and backward power sex differernce, before engine 3 directly drives, at dynamical system
In series drive mode, engine 3 drives generator 1 to be generated electricity and (be not involved in driving), and driving motor 5 is by 6 He of power battery
Generator unit is powered jointly, and the driving force of vehicle is provided by driving motor 5 completely, and the maximum drive power of vehicle is equal to MIN and { drives
The person of sailing drives demand power, MIN (the available driving power of driving motor 5, the reality of available discharge power+generator 1 of battery
Generated output) }.After engine 3 directly drives, dynamical system is in parallel drive mode, and vehicle is by engine 3 and driving motor 5
Common driving, the maximum drive power of vehicle is equal to MIN, and { driver drives demand power, [the straight drive power+MIN of engine 3
(the available driving power of driving motor 5, the available discharge power of battery)] }.Ensure into vehicle after parallel drive mode
Dynamic property does not decay, i.e., the maximum drive power of the vehicle under parallel drive mode is more than or equal under series drive mode
The maximum drive power of vehicle, i.e. { driver drives demand power, [the straight drive power+MIN (driving motor 5 of engine 3 to MIN
Available driving power, the available discharge power of battery)] } >=MIN driver drive demand power, MIN be (driving motor 5
Driving power, the actual generation power of available discharge power+generator 1 of battery can be used) }, because of can be used for current driving motor 5
Driving power meets driver and drives demand power, i.e. the available driving power of driving motor 5 >=driver drives demand power,
Bring this relationship into inequality above and obtain following relationships: MIN driver drives demand power, (engine 3 it is straight
Drive the available discharge power of power+battery) } { driver drives demand power, (available discharge power+power generation of battery to >=MIN
The actual generation power of machine 1) }, the available discharge power that inequality both sides subtract battery simultaneously further obtains following relationships:
{ (driver drives >=MIN MIN { (driver drives the available discharge power of demand power-battery), the straight drive power of engine 3 }
The available discharge power of dynamic demand power-battery), the actual generation power of generator 1 }, if it is expected, the inequality is set up forever,
Then need to meet following conditions: { (driver drives the available electric discharge function of demand power-battery to straight drive power >=MIN of engine 3
Rate), the actual generation power of generator 1 }.
Therefore, as long as the straight drive power of engine 3 is more than or equal to MIN (current driver's driving demand function under current vehicle speed
The difference of the available discharge power of rate and battery, the actual generation power of generator 1), power system operational mode is driven by series connection
Dynamic model formula switches to parallel drive mode, and the maximum drive power of vehicle would not decline, i.e., the dynamic property of vehicle just will not go out
Now decay.
In the second embodiment, the operating mode control method of hybrid vehicle disclosed in this invention includes:
S10, the available driving power for obtaining driving motor 5 under series drive mode after vehicle launch；
S20, judge whether that meeting driver drives demand power according to the available driving power of driving motor 5；
S32, judge whether the available driving power of driving motor 5 is more than or equal to the available discharge power of battery；
S42, judge the difference of the available discharge power of the available driving power and battery of driving motor 5 under current vehicle speed,
Whether it is less than or equal to the straight drive power of engine 3 with the minimum value both in the actual generation power of generator 1；
S50, the operating mode for switching vehicle are parallel drive mode.
In the present embodiment, the detailed process of S10, S20 and S50 it is identical as the first embodiment so it will not be repeated, it is right
The step of S32, S42, is specifically unfolded to illustrate.
Demand power is driven when the available driving power of driving motor 5 is less than driver in step S20, that is, is judged as
It is no, enter step S32.At this point, driving motor 5 has been not enough to separately provide whole power that driver drives demand, sentence is changed
It talks about, driver wishes that car speed is promoted to 100 from 70, and driving motor 5 is only capable of being promoted to 90 from 70 for vehicle, therefore needs
Engine 3 is wanted to provide straight drive power to vehicle, to make up the deficiency of remaining 100-90=10.Therefore, right in the present embodiment
Vehicle switches to parallel drive mode by series drive mode to realize that engine 3 and driving motor 5 drive cutting for vehicle jointly
The opportunity of changing provides judgment method.
In step s 32, judge whether the available driving power of driving motor 5 is more than or equal to the available electric discharge function of battery
Rate if the determination result is YES means that the available driving power of driving motor 5 is maintained jointly by power battery 6 and generator 1, because
This needs to enter continues to judge in next step, i.e. step S42: judging the available driving power of driving motor 5 and electricity under current vehicle speed
Whether the minimum value both in the difference of the available discharge power in pond and the actual generation power of generator 1 is less than or equal to start
The straight drive power of machine 3.
Further judge the straight drive power of engine 3 under current vehicle speed whether be more than or equal to MIN (driving motor 5 it is available
The difference of the available discharge power of driving power and battery, the actual generation power of generator 1) purpose be to compare and start
Machine 3 directly drives forward and backward power sex differernce.Before engine 3 directly drives, dynamical system is in series drive mode, and engine 3 drives
Generator 1 is generated electricity and (is not involved in driving), and driving motor 5 is powered jointly by power battery 6 and generator unit, the driving of vehicle
Power is provided by driving motor 5 completely, and the maximum drive power of vehicle is equal to MIN, and { driver drives demand power, MIN (driving electricity
The available driving power of machine 5, the actual generation power of available discharge power+generator 1 of battery) }.After engine 3 directly drives,
Dynamical system is in parallel drive mode, and vehicle is driven jointly by engine 3 and driving motor 5, the maximum drive power of vehicle
Equal to MIN, { driver drives demand power, [straight drive power+MIN (the available driving power of driving motor 5, the electricity of engine 3
The available discharge power in pond)] }.
Ensure that the dynamic property into vehicle after parallel drive mode does not decay, i.e. vehicle under parallel drive mode
Maximum drive power be more than or equal to series drive mode under vehicle maximum drive power, i.e. MIN driver drive demand
Power, [the straight drive power+MIN (the available driving power of driving motor 5, the available discharge power of battery) of engine 3] } >=
{ driver drives demand power, MIN (the available driving power of driving motor 5, available discharge power+generator 1 of battery to MIN
Actual generation power), because the available driving power of current driving motor 5 have been unable to meet driver drive demand power, i.e.,
The available driving power < driver driving demand power of driving motor 5, and the available driving power of current driving motor 5 >=
The available discharge power of battery, bring the two relationships into inequality above and obtain following relationships: { driver drives MIN
Dynamic demand power, (the available discharge power of straight drive power+battery of engine 3) } >=MIN { the available driving function of driving motor 5
Rate, (actual generation power of available discharge power+generator 1 of battery) }, inequality both sides subtract the available of battery simultaneously and put
Electrical power further obtains following relationships: MIN { (driver drives the available discharge power of demand power-battery), engine 3
Straight drive power >=MIN { (the available discharge power of available driving power-battery of driving motor 5), the practical hair of generator 1
Electrical power }, if it is expected, the inequality is set up forever, needs to meet following conditions: straight drive power >=MIN { (driving of engine 3
The available discharge power of available driving power-battery of motor 5), the actual generation power of generator 1 }.
Therefore, as long as the straight drive power of engine 3 is more than or equal to MIN (the available driving function of driving motor 5 under current vehicle speed
The difference of the available discharge power of rate and battery, the actual generation power of generator 1), power system operational mode is driven by series connection
Dynamic model formula switches to parallel drive mode, and the maximum drive power of vehicle would not decline, i.e., the dynamic property of vehicle just will not go out
Now decay.
For superior technique effect, when step S42 is judged as NO, keeping the operating mode of vehicle is tandem drive mould
Formula, if because the decaying of dynamic property, economy side can be generated compared to series drive mode by being switched to parallel drive mode at this time
Face also will appear loss, therefore maintaining series drive mode dynamic property can be more preferable.
In the third embodiment, the operating mode control method of hybrid vehicle disclosed in this invention includes:
S10, the available driving power for obtaining driving motor 5 under series drive mode after vehicle launch；
S20, judge whether that meeting driver drives demand power according to the available driving power of driving motor 5；
S32, driving motor 5 available driving power whether be more than or equal to the available discharge power of battery；
S43, judge whether the straight drive power of engine 3 under current vehicle speed is greater than the available driving power of driving motor 5；
S50, the operating mode for switching vehicle are parallel drive mode.
In the present embodiment, the detailed process of S10, S20, S32 and S50 it is identical as the first embodiment so it will not be repeated,
The step of S43, is specifically unfolded to illustrate.
When being judged as NO for step S32, i.e. the available driving power of the driving motor 5 available discharge power that is less than battery,
Mean that the available driving power of driving motor 5 is smaller, the operating of driving motor 5 can be maintained separately through power battery 6, because
This judges whether the straight drive power of engine 3 under current vehicle speed is greater than the available driving function of driving motor 5 in step S43
Rate.At this point, because the available driving power < driver of driving motor 5 drives demand power, and the available driving function of driving motor 5
The available discharge power of rate < battery, as long as so the available driving power of the straight drive power > driving motor 5 of engine 3, is moved
Force system operating mode switches to parallel drive mode by series drive mode, and the maximum drive power of vehicle would not decline,
I.e. the dynamic property of vehicle is just not in decaying.
For superior technique effect, when step S43 is judged as NO, keeping the operating mode of vehicle is tandem drive mould
Formula, if because the decaying of dynamic property, economy side can be generated compared to series drive mode by being switched to parallel drive mode at this time
Face also will appear loss, therefore maintaining series drive mode dynamic property can be more preferable.
The present invention also provides a kind of operating mode control systems of hybrid vehicle, including for after obtaining vehicle launch
The acquisition module of the available driving power of driving motor 5 under series drive mode；For judging the available driving function of driving motor 5
Whether rate meets the starting judgment module that driver drives demand power；For judging when engine 3 directly drives, under current vehicle speed
The intermediate range judgment module whether driver drives demand power engine 3 can be allowed to enter high efficient district；It is issued for current vehicle speed
Whether the straight drive power of motivation 3 meets the final judgment module of the unattenuated requirement of vehicle dynamic property.Above-mentioned hybrid vehicle
Operating mode control system has whole beneficial effects of the operating mode control method of hybrid vehicle, no longer superfluous here
It states.
The present invention also provides a kind of hybrid vehicles, the operating mode control system including hybrid vehicle, therefore
Whole beneficial effects of operating mode control system with hybrid vehicle, which is not described herein again.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Detailed Jie has been carried out to hybrid vehicle provided by the present invention, operating mode control system and its method above
It continues.Used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only
It is to be used to help understand method and its core concept of the invention.It should be pointed out that for those skilled in the art
For, it without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention, these improve and repair
Decorations are also fallen within the protection scope of the claims of the present invention.
Claims (10)
1. a kind of operating mode control method of hybrid vehicle characterized by comprising
Obtain the available driving power of driving motor under series drive mode after vehicle launch；
Judge whether that meeting driver drives demand power according to the available driving power of the driving motor, if so, executing
In next step；
Judge when engine direct drives, under current vehicle speed the driver drive demand power whether can allow the engine into
Enter high efficient district, if so, performing the next step；
Judge whether the straight drive power of the engine under current vehicle speed meets the unattenuated requirement of vehicle dynamic property, if so, holding
Row is in next step；
The operating mode for switching the vehicle is parallel drive mode.
2. the operating mode control method of hybrid vehicle as described in claim 1, which is characterized in that the judgement is being sent out
When motivation is directly driven, whether the driver drives demand power the engine can be allowed to enter high efficient district under current vehicle speed step
After rapid, further includes:
If the engine can not enter high efficient district, then keeping the operating mode of the vehicle is series drive mode.
3. the operating mode control method of hybrid vehicle as described in claim 1, which is characterized in that the judgement is current
After whether the straight drive power of the engine meets vehicle dynamic property unattenuated the step of requiring under speed, further includes:
If the straight drive power of the engine is unsatisfactory for the unattenuated requirement of vehicle dynamic property, then the Working mould of the vehicle is kept
Formula is series drive mode.
4. the operating mode control method of hybrid vehicle as described in claim 1, which is characterized in that described according to
The available driving power of driving motor judged whether after the step of meeting driver's driving demand power, further includes:
If the available driving power of the driving motor is unsatisfactory for the driver and drives demand power, the driving electricity is judged
Whether the available driving power of machine is more than or equal to the available discharge power of battery, if so, performing the next step；
Judge under current vehicle speed the difference of the available discharge power of the available driving power and battery of the driving motor and
Whether the minimum value both in the actual generation power of generator is less than or equal to the straight drive power of the engine, if so, holding
Row is in next step；
The operating mode for switching the vehicle is parallel drive mode.
5. the operating mode control method of hybrid vehicle as claimed in claim 4, which is characterized in that the judgement is current
The reality of the difference of the available discharge power of the available driving power and battery of the driving motor and generator under speed
After the step of whether minimum value both in generated output is less than or equal to the straight drive power of the engine, further includes:
If it is not, then keeping the operating mode of the vehicle is series drive mode.
6. the operating mode control method of hybrid vehicle as claimed in claim 4, which is characterized in that the judgement driving
After the step of whether available driving power of motor is more than or equal to the available discharge power of battery, further includes:
If the available driving power of the driving motor is less than the available discharge power of the battery, institute under current vehicle speed is judged
Whether the straight drive power for stating engine is greater than the available driving power of the driving motor, if so, performing the next step；
The operating mode for switching the vehicle is parallel drive mode.
7. the operating mode control method of hybrid vehicle as claimed in claim 6, which is characterized in that the judgement is current
After the step of whether straight drive power of the engine is greater than the available driving power of the driving motor under speed, also wrap
It includes:
If it is not, then keeping the operating mode of the vehicle is series drive mode.
8. the operating mode control method of hybrid vehicle as described in any one of claim 1 to 7, which is characterized in that institute
It states and judges whether the straight drive power of the engine under current vehicle speed meets vehicle dynamic property unattenuated the step of requiring specifically:
Judge that the driver under current vehicle speed drives the difference of demand power and the available discharge power of the battery and described
Whether the minimum value both in the actual generation power of generator is less than or equal to the straight drive power of the engine.
9. a kind of operating mode control system of hybrid vehicle characterized by comprising
For obtaining the acquisition module of the available driving power of driving motor under series drive mode after vehicle launch；
The starting of demand power is driven to judge mould for judging whether the available driving power of the driving motor meets driver
Block；
For judging when engine direct drives, the driver drives whether demand power can allow described start under current vehicle speed
Machine enters the intermediate range judgment module of high efficient district；
Whether meet the final judgement of the unattenuated requirement of vehicle dynamic property for the straight drive power of engine described under current vehicle speed
Module.
10. a kind of hybrid vehicle, the operating mode control system including hybrid vehicle as claimed in claim 10.
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| CN201811289450.1A CN109353330B (en) | 2018-10-31 | 2018-10-31 | Hybrid vehicle, working mode control system and method thereof |
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| CN201811289450.1A CN109353330B (en) | 2018-10-31 | 2018-10-31 | Hybrid vehicle, working mode control system and method thereof |
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