CN108773371A - The driving distribution method and hybrid vehicle of hybrid vehicle - Google Patents
The driving distribution method and hybrid vehicle of hybrid vehicle Download PDFInfo
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- CN108773371A CN108773371A CN201810607819.2A CN201810607819A CN108773371A CN 108773371 A CN108773371 A CN 108773371A CN 201810607819 A CN201810607819 A CN 201810607819A CN 108773371 A CN108773371 A CN 108773371A
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- hybrid vehicle
- driving mode
- power battery
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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
Abstract
Embodiment of the present invention discloses the driving distribution method and hybrid vehicle of hybrid vehicle.This method includes：Applicable driving mode is determined from the candidate driving mode of the hybrid vehicle based on power battery situation, wherein candidate's driving mode includes traditional driving mode and mixed dynamic driving mode；Determine the operating mode being applicable in driving mode, wherein when the driving cycles being determined as in traditional driving mode, enabled engine is operated alone the transmission system of the hybrid vehicle and provides electric energy for the high casting die of the hybrid vehicle, enables the power battery and provides electric energy for the low pressure part of the hybrid vehicle；When the starting operating mode being determined as in mixed dynamic driving mode, the transmission system of the hybrid vehicle is operated alone in enabled power battery, and enabled power battery provides electric energy for the high casting die and low pressure part of the hybrid vehicle.
Description
Technical field
The present invention relates to automobile technical fields, more particularly, to the driving distribution method of hybrid vehicle and mixing
Power car.
Background technology
Energy shortage, oil crisis and environmental pollution grow in intensity, and tremendous influence, direct relation are brought to people's lives
To the sustainable development of national economy and society.Countries in the world are all in active development new energy technology.Electric vehicle is as a kind of
Reduce the new-energy automobile of consumption of petroleum, low stain, low noise, it is considered to be solve the important way of energy crisis and environmental degradation
Diameter.Hybrid vehicle (HEV) while the advantage for taking into account pure electric automobile and traditional combustion engine automobile, are meeting vehicle dynamic quality
It is required that under the premise of being required with continual mileage, it is effectively improved fuel economy, reduces discharge, it is considered to be is current energy saving
One of with the active path of emission reduction.
Hybrid vehicle generally uses traditional internal combustion engine (diesel engine or gasoline engine) and motor as power source,
Some engines use other alternative fuel, such as compressed natural gas, propane and alcohol fuel etc. by transformation.
According to the bind mode that hybrid power drives, generally hybrid vehicle is divided into three classes：(1), tandem mixes
Power vehicle (SHEV) mainly constitutes HEV by the three big power assembly such as engine, generator, driving motor with series system
Dynamical system；(2) engine of parallel hybrid electric vehicle (PHEV) and generator are all power assemblies, and two big power are total
At power can mutually superimposed output, can also individually export；(3) it mixes dynamic formula hybrid vehicle (PSHEV) and combines string
Connection formula and parallel structure and the electric vehicle formed, mainly by three big power of engine, motor generator and driving motor
Assembly forms.
Two power sources of engine and battery pack are integrated on same automobile by hybrid vehicle at this stage, including
Two kinds of power executive components of engine and motor, can form a variety of power frameworks such as series, parallel or series-parallel connection, core concept is just
It is：Huge discharge vehicle realizes the low oil consumption low emission of automobile with small output volume；The realization huge discharge vehicle strong power of automobile with small output volume.
In the driving method of salary distribution of the hybrid vehicle of the prior art, always preferentially vehicle is driven using power battery
, and the virtual condition of power battery is ignored, this driving method of salary distribution has shortcomings.For example, when power battery
When capacitance declines serious, in order to ensure that the state-of-charge (SOC) of power battery is not less than lower limit, it will usually force enabled start
Machine is battery powered, to tie down engine, increases the oil consumption and discharge of vehicle, this thinks with hybrid vehicle design original intention
It is contrary to.
Invention content
The purpose of the present invention is to propose to the driving distribution methods and hybrid vehicle of a kind of hybrid vehicle, to excellent
Change driving distribution.
Embodiment of the present invention includes：
A kind of driving distribution method of hybrid vehicle, this method include：
Applicable driving mode is determined from the candidate driving mode of the hybrid vehicle based on power battery situation,
Described in candidate driving mode include traditional driving mode and mixed dynamic driving mode；
Determine the operating mode being applicable in driving mode, wherein when the driving cycles being determined as in traditional driving mode,
Enabled engine is operated alone the transmission system of the hybrid vehicle and is provided for the high casting die of the hybrid vehicle
Electric energy enables the power battery and provides electric energy for the low pressure part of the hybrid vehicle；Driving mode is moved when being determined as mixing
In starting operating mode when, enabled power battery is operated alone the transmission system of the hybrid vehicle, and enabled power battery
Electric energy is provided for the high casting die and low pressure part of the hybrid vehicle.
In one embodiment, it is described based on power battery situation from the candidate driving mode of the hybrid vehicle
Middle determination is applicable in driving mode：
The state-of-charge for detecting power battery is determined and is applicable in when the state-of-charge is more than scheduled first threshold value
Driving mode is mixed dynamic driving mode, and when the state-of-charge is less than or equal to first threshold value, determining be applicable in drives mould
Formula is traditional driving mode.
In one embodiment, it is described based on power battery situation from the candidate driving mode of the hybrid vehicle
Middle determination is applicable in driving mode：
The health status for detecting power battery is determined and is applicable in when the health status is more than scheduled second threshold value
Driving mode is mixed dynamic driving mode, and when the health status is less than or equal to second threshold value, determining be applicable in drives mould
Formula is traditional driving mode.
In one embodiment, it is described based on power battery situation from the candidate driving mode of the hybrid vehicle
Middle determination is applicable in driving mode：
The state-of-charge and health status for detecting power battery calculate state-of-charge and healthy shape based on predetermined weighting algorithm
The weighted value of state；When the weighted value is more than scheduled third threshold value, determine that applicable driving mode is mixed dynamic driving mode,
When the weighted value is less than or equal to the third threshold value, determine that applicable driving mode is traditional driving mode.
In one embodiment, traditional driving mode further includes energy regenerating operating mode, and this method further includes：
When the energy regenerating operating mode being determined as in traditional driving mode, it is the hybrid electric vehicle to enable the engine
High casting die electric energy is provided, enable the power battery and provide electric energy for the low pressure part of the hybrid vehicle, enabled institute
It is the power battery charging to state transmission system.
In one embodiment, the mixed dynamic driving mode further includes underloading driving cycles, and this method further includes：
When the underloading driving cycles being determined as in mixed dynamic driving mode, the hybrid power is operated alone in enabled engine
The transmission system of vehicle, and enabled power battery provides electric energy for the high casting die and low pressure part of the hybrid vehicle.
In one embodiment, the mixed dynamic driving mode further includes heavily loaded driving cycles, and this method further includes：
When the heavily loaded driving cycles being determined as in mixed dynamic driving mode, enabled engine and power battery drive institute jointly
The transmission system of hybrid vehicle is stated, enabled power battery provides electricity for the high casting die and low pressure part of the hybrid vehicle
Can, and enabled power battery drives startup generator to provide booster torquemoment for the engine via belt.
In one embodiment, the mixed dynamic driving mode further includes energy regenerating operating mode, and this method further includes：
When the energy regenerating operating mode being determined as in mixed dynamic driving mode, it is the hybrid power to enable the power battery
The low pressure part of vehicle and high casting die provide electric energy, and it is the power battery charging to enable the transmission system.
A kind of hybrid vehicle, including：
Power battery is connect via motor with transmission system；
Engine is connect with transmission system；
Entire car controller, for being determined from the candidate driving mode of the hybrid vehicle based on power battery situation
It is applicable in driving mode, wherein candidate's driving mode includes traditional driving mode and mixed dynamic driving mode；Determine described be applicable in
Operating mode in driving mode, wherein：When the driving cycles being determined as in traditional driving mode, institute is operated alone in enabled engine
It states the transmission system of hybrid vehicle and provides electric energy for the high casting die of the hybrid vehicle, enable the power battery
Electric energy is provided for the low pressure part of the hybrid vehicle；When the starting operating mode being determined as in mixed dynamic driving mode, make active
The transmission system of the hybrid vehicle is operated alone in power battery, and the height that enabled power battery is the hybrid vehicle
Casting die and low pressure part provide electric energy；When the energy regenerating operating mode being determined as in traditional driving mode, enabling the engine is
The high casting die of the hybrid vehicle provides electric energy, enables the low pressure part that the power battery is the hybrid vehicle and carries
For electric energy, it is the power battery charging to enable the transmission system；When the underloading being determined as in mixed dynamic driving mode drives work
When condition, the transmission system of the hybrid vehicle is operated alone in enabled engine, and enabled power battery is that the mixing is dynamic
The high casting die and low pressure part of power vehicle provide electric energy；When the heavily loaded driving cycles being determined as in mixed dynamic driving mode, hair is enabled
Motivation and power battery drive the transmission system of the hybrid vehicle jointly, and it is the hybrid electric vehicle to enable power battery
High casting die and low pressure part electric energy is provided, and enabled power battery drives that start generator be that the engine is carried via belt
For booster torquemoment；When the energy regenerating operating mode being determined as in mixed dynamic driving mode, it is the mixing to enable the power battery
The low pressure part of power car and high casting die provide electric energy, and it is the power battery charging to enable the transmission system.
A kind of computer readable storage medium, wherein being stored with computer-readable instruction, which is used for
The step of executing the driving distribution method of any one of them hybrid vehicle as above.
It can be seen from the above technical proposal that the method for embodiment of the present invention includes：Based on power battery situation from mixed
Close and determine applicable driving mode in the candidate driving mode of power car, wherein candidate driving mode include traditional driving mode and
Mixed dynamic driving mode；Determine the operating mode being applicable in driving mode, wherein when the driving cycles being determined as in traditional driving mode,
Enabled engine is operated alone the transmission system of hybrid vehicle and provides electric energy for the high casting die of hybrid vehicle, enables
Power battery provides electric energy for the low pressure part of hybrid vehicle；When the starting operating mode being determined as in mixed dynamic driving mode, make
The transmission system of hybrid vehicle is operated alone in motility battery, and the high casting die that enabled power battery is hybrid vehicle
Electric energy is provided with low pressure part.As it can be seen that embodiment of the present invention determines applicable driving mode based on the virtual condition of power battery,
Determine whether to drive vehicle using power battery based on operating mode again, avoids and blindly preferentially drive vehicle using power battery and lead
It causes engine to be forced to battery powered situation, reduces complete-vehicle oil consumption and discharge.
Moreover, traditional driving mode of embodiment of the present invention, which also has, slides the work(such as energy regenerating, Brake energy recovery
Can, and low pressure part (without high-powers attachmentes such as air-conditionings) is by power battery (battery pack) power supply rather than conventional fuel oil car
Accumulator, ensure battery pack do not tie down engine while, also compare conventional fuel oil car oil consumption and emission effect carry
It rises.
Description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the flow chart according to the driving distribution method of hybrid vehicle of the present invention.
Fig. 2 is the energy flow scheme according to driving cycles in traditional driving mode of the invention.
Fig. 3 is the energy flow scheme according to energy regenerating operating mode in traditional driving mode of the invention.
Fig. 4 is the energy flow scheme according to the operating mode that starts to walk in the mixed dynamic driving mode of the present invention.
Fig. 5 is according to the energy flow scheme for being lightly loaded driving cycles in the mixed dynamic driving mode of the present invention.
Fig. 6 is the energy flow scheme according to heavily loaded driving cycles in the mixed dynamic driving mode of the present invention.
Fig. 7 is the energy flow scheme according to energy regenerating operating mode in the mixed dynamic driving mode of the present invention.
Fig. 8 is the demonstrative structure figure according to hybrid vehicle of the present invention.
Specific implementation mode
In order to which the technical features, objects and effects to invention are more clearly understood, now control description of the drawings is of the invention
Specific implementation mode, in the various figures identical label indicate identical part.
It is succinct and intuitive in order to what is described, hereafter by describing several representative embodiments come the side to the present invention
Case is illustrated.A large amount of details is only used for helping to understand the solution of the present invention in embodiment.However, it will be apparent that the present invention
Technical solution can be not limited to these details when realizing.In order to avoid unnecessarily having obscured the solution of the present invention, some realities
It applies mode not described meticulously, but only gives frame.Hereinafter, " comprising " refers to " including but not limited to ", " root
According to ... " refer to " according at least to ..., but be not limited to according only to ... ".Due to the speech habits of Chinese, hereinafter without spy
When not pointing out the quantity of an ingredient, it is meant that the ingredient is either one or more, or can be regarded as at least one.
It is found by the applicant that：The hybrid vehicle of the prior art ignores the virtual condition of power battery, and always preferential
Drive vehicle using power battery, lead to power battery service life reduction, engine be forced to battery powered cause complete-vehicle oil consumption and
The shortcomings of discharge increases.
In embodiments of the present invention, the hybrid power system framework of hybrid vehicle includes only two kinds of driving modes：
Traditional driving mode and mixed dynamic driving mode.Wherein, traditional driving mode and conventional fuel oil car are essentially identical, difference lies in,
Traditional driving mode of embodiment of the present invention has the function of to slide energy regenerating, Brake energy recovery etc., and low pressure part (is free of
The high-powers such as air-conditioning attachment) by the accumulator in power battery (battery pack) power supply rather than conventional fuel oil car.
Moreover, in the mixed dynamic driving mode of embodiment of the present invention, including pure electricity crawling, motor power-assisted, sliding energy
The functions such as recycling and Brake energy recovery, and vehicle-mounted attachment is powered by power battery.
In embodiments of the present invention, when power battery pack functional (for example, SOC is not very low), it is recommended to use
Mixed dynamic driving mode both can enhance vehicle power by motor power-assisted in this way, and vehicle oil is reduced simultaneously also by pure electric crawling
Consumption and discharge.And in power battery pack performance degradation when (for example SOC is relatively low), it is recommended to use traditional driving mode, from
And while ensureing that battery pack does not tie down engine, have and slides and braking energy recovering function, it still can be than conventional fuel oil car
Oil consumption and discharge are slightly excellent.
Fig. 1 is the flow chart according to the driving distribution method of hybrid vehicle of the present invention.
As shown in Figure 1, this method includes：
Step 101：It determines to be applicable in from the candidate driving mode of hybrid vehicle based on power battery situation and drives mould
Formula, wherein candidate driving mode includes traditional driving mode and mixed dynamic driving mode.
In one embodiment, it is determined from the candidate driving mode of hybrid vehicle based on power battery situation suitable
Include with driving mode：
The state-of-charge (State of Charge, SOC) for detecting power battery, when state-of-charge is more than scheduled first
When threshold value, determine that applicable driving mode is mixed dynamic driving mode, when state-of-charge is less than or equal to first threshold value, really
Surely it is traditional driving mode to be applicable in driving mode.Preferably, the first threshold value can be based on the adjustable threshold value of experience.
What SOC was represented is the residual capacity and its fully charged state after battery is lain idle using a period of time or for a long time
Capacity ratio, commonly use percentage indicate.Its general hexadecimal representation (value range with a byte namely two
It is 0~100), it is meant that remaining capacity is 0%~100%, indicates that battery discharge is complete as SOC=0, the table as SOC=1
Show that battery is completely filled with.
In embodiments of the present invention, SOC typical case's algorithm for estimating of applicable power battery includes：
(1) Current integrating method
Current integrating method is also Ah counting method, is to apply more universal SOC in battery management system field at present
One of evaluation method, essence are to estimate electricity by accumulating the electricity for being charged into or releasing when battery carries out charge or discharge
The SOC in pond, while certain compensation is carried out to the SOC estimated according to discharge rate and battery temperature.
(2) discharge test method
Discharge test method is that target battery is carried out lasting constant-current discharge until the blanking voltage of battery, this was discharged
The time of Cheng Suoyong is multiplied by the sizes values of discharge current, i.e., as the residual capacity of battery.This method is estimated generally as battery SOC
The scaling method of calculation or with the later maintenance of accumulator work on, in the case where not knowing SOC value of battery use this side
Method, it is relatively easy, reliable, and result is also relatively more accurate while all effective to different types of accumulator.
(3) open circuit voltage method
Open circuit voltage method is the open-circuit voltage (Open Circuit Voltage, OCV) and inside battery lithium according to battery
Variation relation between ion concentration fits its one-to-one relationship between battery SOC indirectly.Carrying out practical behaviour
When making, need by battery it is at full charge after discharged with fixed discharge-rate (generally taking 1C), until the cut-off electricity of battery
Stop electric discharge when pressure, the relation curve between OCV and SOC is obtained according to the discharge process.When battery is in actual working state
When just can obtain current battery SOC according to the voltage value at battery both ends by searching for OCV-SOC relation tables.Open circuit voltage method
As discharge test method, it is not particularly suited for running battery SOC estimation.
4) Kalman filter method
Kalman filter method is the paper that U.S. mathematician Kalman (R.E.Kalman) delivers at the beginning of the sixties in last century
《The new results of linear filtering and prediction theory》A kind of novel optimization autoregression data filtering algorithm of middle proposition.The algorithm
Essence is that optimum estimation can be made to the state of complex dynamic systems according to Minimum Mean Square Error principle.It is nonlinear dynamic
State system can be linearized into the state-space model of system in Kalman filtering method, and in practical application, system is according to previous
The state variable that the estimated value at moment and the observation at current time seek needs is updated, it then follows " prediction-actual measurement-
The pattern of amendment " eliminates system existing deviation and interference at random.When estimating the SOC of power battery using Kalman filter method,
Battery is converted into state-space model in the form of dynamical system, and SOC then becomes to become for a state inside the model
Amount.The system of foundation is a linear discrete system.Since Kalman filter method can not only update the system initial error, moreover it is possible to
System noise is effectively inhibited, therefore in the SOC of the extremely complex electric automobile power battery of operating condition estimations, had aobvious
The application value of work.
The above demonstration describes the typical algorithm for estimating of the SOC of power battery, it will be appreciated by those of skill in the art that
This description is only exemplary, is not used to be defined the protection domain of embodiment of the present invention.
In one embodiment, it is determined from the candidate driving mode of hybrid vehicle based on power battery situation suitable
Include with driving mode：
The health status (SOH) for detecting power battery is determined and is applicable in when health status is more than scheduled second threshold value
Driving mode is mixed dynamic driving mode, when health status is less than or equal to the second threshold value, determines that applicable driving mode is tradition
Driving mode.Herein, the second threshold value can be based on the adjustable threshold value of experience.
SOH reflects the life time decay degree of battery.The life time decay degree of battery affects the dynamic property of electric vehicle
Energy, continual mileage and security performance, need effectively to be assessed.In order to effectively be managed for battery pack, vehicle is improved
The performance of power battery pack under the conditions of load needs the key for including in cell health state algorithm for estimating battery management system
One of algorithm.Quantitative definition for SOH is battery remaining power and the ratio of initial capacity.
In embodiments of the present invention, estimate that a kind of implementation of the SOH of battery is charge and discharge electrical method.Firstly, for electricity
Pond carries out charge and discharge, obtains the initial capacity of battery；Then, charge and discharge are carried out for the battery in using, obtains the reality of battery
Border residual capacity；According to the definition of cell health state (SOH), returned with the real surplus capacity divided by initial capacity of battery
One cell health state (SOH) estimated value changed.
In embodiments of the present invention, estimate the other common method of the SOH of battery be voltage derivative method (DVA,
Differential Voltage Analysis) and capacity increment method (ICA, Incremental Capacity
Analysis), by carrying out charge and discharge for battery, real time capacity-voltage curve of battery is obtained, curve is carried out micro-
Point, draw the curve of differentiation result.Peak position in differentiation result curve has related to size and the residual capacity of battery
Property, compare the differential curve in the case of initial situation and certain moment, you can to estimate for cell health state
In one embodiment, it is determined from the candidate driving mode of hybrid vehicle based on power battery situation suitable
Include with driving mode：
The SOC and SOH for detecting power battery calculate the weighted value of SOC and SOH based on predetermined weighting algorithm；Work as weighted value
When more than scheduled third threshold value, determine that applicable driving mode is mixed dynamic driving mode, when the weighted value is less than or equal to institute
When stating third threshold value, determine that applicable driving mode is traditional driving mode.Third threshold value herein can be based on experience
Adjustable threshold value.
Therefore, it by calculating final weighted value according to weighting algorithm to SOC and SOH, and is embodied based on the weighted value
Power battery situation, to having taken into account the two parameters of SOC and SOH, concentrated expression power battery situation.
Step 102：The operating mode being applicable in driving mode is determined, wherein when the driving cycles being determined as in traditional driving mode
When, enabled engine is operated alone the transmission system of hybrid vehicle and provides electric energy for the high casting die of hybrid vehicle,
Enabled power battery provides electric energy for the low pressure part of hybrid vehicle；When the starting operating mode being determined as in mixed dynamic driving mode
When, the transmission system of hybrid vehicle is operated alone in enabled power battery, and enabled power battery is hybrid vehicle
High casting die and low pressure part provide electric energy.Wherein, engine is specifically as follows internal combustion engine (diesel engine or gasoline engine).
After determining to be applicable in driving mode in a step 101 based on power battery situation, it is based further on applicable
Specific operating mode in driving mode and execute driving distribution control.Wherein, traditional driving mode may include driving cycles (ratio
Such as, accelerate driving, driving of slowing down, crawling starting) and energy regenerating operating mode (such as Brake energy recovery or slide energy recycling).
Mixed dynamic driving mode may include starting operating mode (using pure electric crawling starting), underloading driving cycles, heavily loaded driving cycles and energy
Amount recycling operating mode (such as Brake energy recovery or slide energy recycling).Moreover, low pressure part include each quasi-controller on vehicle body,
Sensor, instrument show, car light and audio-visual entertainment electronic appliances etc. are supported the attachment of work by low-tension supply, and high casting die includes vehicle-mounted
Air-conditioning (including freeze and heat) etc. is supported the attachment of work by high voltage power supply.
Herein, the detected value of various sensing equipments (such as gas pedal, brake pedal etc.) can be based on and determined
Specific operating mode.
Wherein, when the driving cycles being determined as in traditional driving mode, hybrid electric vehicle is operated alone in enabled engine
Transmission system and provide electric energy for the high casting die of hybrid vehicle, enable power battery be hybrid vehicle low pressure
Part provides electric energy；When the starting operating mode being determined as in mixed dynamic driving mode, hybrid electric vehicle is operated alone in enabled power battery
Transmission system, and enabled power battery provides electric energy for the high casting die and low pressure part of hybrid vehicle
In one embodiment, traditional driving mode further includes energy regenerating operating mode, and this method further includes：
When the energy regenerating operating mode being determined as in traditional driving mode, the high pressure that engine is hybrid vehicle is enabled
Part provides electric energy, and enabled power battery provides electric energy for the low pressure part of hybrid vehicle, and it is power battery to enable transmission system
Charging.
In one embodiment, it further includes underloading driving cycles to mix dynamic driving mode, and this method further includes：
When the underloading driving cycles being determined as in mixed dynamic driving mode, hybrid vehicle is operated alone in enabled engine
Transmission system, and enabled power battery provides electric energy for the high casting die and low pressure part of hybrid vehicle.
In one embodiment, it further includes heavily loaded driving cycles to mix dynamic driving mode, and this method further includes：
When the heavily loaded driving cycles being determined as in mixed dynamic driving mode, enabling engine and power battery, driving is mixed jointly
The transmission system of power car is closed, enabled power battery provides electric energy for the high casting die and low pressure part of hybrid vehicle, and makes
Motility battery drives startup (BSG) generator to provide booster torquemoment for engine via belt.
Preferably, underloading driving cycles and heavily loaded driving cycles can be determined based on gas pedal aperture.For example, when detection
When being more than the first calibration value (for example, gas pedal aperture is 80 or more percent) to gas pedal aperture, assert in weight
Carry driving cycles；When detect gas pedal aperture be less than the second calibration value (for example, gas pedal aperture be 50 percent with
Under) when, assert in underloading driving cycles.Motor assist function is also realized in heavily loaded driving cycles, i.e., when vehicle torque demand
When more than peak torque (the optimum efficiency torque of engine) for starting function offer, the motor that energy is provided by power battery is joined
With the driving of transmission system, makes up engine and the part torque provided is provided.
In one embodiment, it further includes energy regenerating operating mode to mix dynamic driving mode, and this method further includes：
When the energy regenerating operating mode being determined as in mixed dynamic driving mode, it is the low of hybrid vehicle to enable power battery
Casting die and high casting die provide electric energy, and it is power battery charging to enable transmission system.
Energy regenerating operating mode can include to slide energy regenerating and Brake energy recovery.When vehicle is in high speed (speed
Higher than calibration value) in driving procedure, while release the accelerator pedal and brake pedal, motor can send out a negative value torque (size
Change with speed), the driving experience of simulated engine towing astern, while generating electricity and carrying out energy regenerating.
Embodiment of the present invention is described in detail with reference to specific example.
The dynamical system framework of the hybrid vehicle of embodiment of the present invention includes：Front axle engine driving and rear axle electricity
Machine drives, and wherein front axle has BSG motors and engine band connection, can quickly start stopping engine, can both generate electricity or right
Engine power-assisted.The groundwork step of hybrid vehicle includes：Pure electricity crawling, motor power-assisted (front axle BSG motors and are started
Machine couples, and rear axle M motors independently drive), slide energy regenerating and Brake energy recovery.The driving mode packet of hybrid vehicle
Include traditional driving mode and mixed dynamic driving mode.
Fig. 2-Fig. 7 illustrates the energy flow scheme in each operating mode of embodiment of the present invention hybrid vehicle, wherein
A1 identifies low pressure part；A2 identifies high casting die；B identifies power battery pack；E identifies engine；F identifies fuel tank；M1
Identify BSG motors；M2 identifies M motors；P identifies power converter；T identifies transmission system.
In Fig. 2-Fig. 7, the single line item connection between component indicates electrical connection, and the two-wire item connection between component indicates
Mechanical connection.
Fig. 2 is the energy flow scheme according to driving cycles in traditional driving mode of the invention.
From Figure 2 it can be seen that when driving cycles in traditional driving mode, fuel tank F is passed via engine E to transmission system T
Delivery of energy amount, and battery B does not transmit energy to transmission system T, i.e. the transmission system of hybrid vehicle is operated alone in engine E
T.Engine E also provides electric energy via BSG motors M1 for the high casting die A2 of hybrid vehicle, and battery B turns via power
Parallel operation P provides electric energy to low pressure part A1.
Fig. 3 is the energy flow scheme according to energy regenerating operating mode in traditional driving mode of the invention.
As seen from Figure 3, when energy regenerating operating mode in traditional driving mode, transmission system T is via M motors M2 to battery
B charges.Engine E provides electric energy via BSG motors M1 for the high casting die A2 of hybrid vehicle, and battery B is via power
Converter P provides energy to low pressure part A1.
Fig. 4 is the energy flow scheme according to starting operating mode in the mixed dynamic driving mode of the present invention (pure electricity crawling starting).
From fig. 4, it can be seen that in the starting operating mode in mixing dynamic driving mode, the biography of hybrid vehicle is operated alone in battery B
Dynamic system T.Moreover, battery B provides electric energy via power converter P to low pressure part A1, battery B also via power converter P to
High casting die A2 provides electric energy.
Fig. 5 is according to the energy flow scheme for being lightly loaded driving cycles in the mixed dynamic driving mode of the present invention.
As seen from Figure 5, when being lightly loaded driving cycles in mixed dynamic driving mode, fuel tank F is via engine E to transmission system T
Energy is transmitted, and battery B does not transmit energy to transmission system T, i.e. the power train of hybrid vehicle is operated alone in engine E
Unite T.Moreover, battery B provides electric energy via power converter P to low pressure part A1, battery B is also high pressure via power converter P
Part A2 provides electric energy.
Fig. 6 is the energy flow scheme according to heavily loaded driving cycles in the mixed dynamic driving mode of the present invention.
As seen from Figure 6, in mixed dynamic driving mode when heavily loaded driving cycles, fuel tank F is via engine E to transmission system T
Energy is transmitted, battery B transmits energy via M motors M2 to transmission system T, i.e. engine E and battery B drive hybrid power jointly
The transmission system T of vehicle.Moreover, battery B provides electric energy via power converter P to low pressure part A1, battery B also turns via power
Parallel operation P provides electric energy for high casting die A2.Meanwhile battery B also provides power-assisted via BSG motors M1 to engine E.
Fig. 7 is the energy flow scheme according to energy regenerating operating mode in the mixed dynamic driving mode of the present invention.
As seen from Figure 7, when energy regenerating operating mode in mixed dynamic driving mode, transmission system T is via M motors M2 to battery
B charges.Moreover, battery B provides electric energy via power converter P to low pressure part A1, battery B is also height via power converter P
Casting die A2 provides electric energy.
Based on foregoing description, embodiment of the present invention also proposed a kind of hybrid vehicle.
Fig. 8 is the demonstrative structure figure according to hybrid vehicle of the present invention.
As shown in figure 8, the hybrid vehicle includes：
Power battery 801 is connect via motor with transmission system 802；
Engine 803 is connect with transmission system 802；
Entire car controller 804, for the situation based on power battery 801 from the candidate driving mode of hybrid vehicle
Determine applicable driving mode, wherein：Candidate driving mode includes traditional driving mode and mixed dynamic driving mode；It determines to be applicable in and drive
Operating mode in pattern, wherein when the driving cycles being determined as in traditional driving mode, mixing is operated alone in enabled engine 803
The transmission system 802 of power car simultaneously provides electric energy for the high casting die of hybrid vehicle, and it is that mixing is dynamic to enable power battery 801
The low pressure part of power vehicle provides electric energy；When the starting operating mode being determined as in mixed dynamic driving mode, power battery 801 is enabled individually
Drive the transmission system 802 of the hybrid vehicle, and high casting die that enabled power battery 801 is hybrid vehicle and low
Casting die provides electric energy；When the energy regenerating operating mode being determined as in traditional driving mode, it is hybrid electric vehicle to enable engine 803
High casting die electric energy is provided, enabled power battery 801 provides electric energy for the low pressure part of hybrid vehicle, enabled transmission system
802 charge for power battery 801；When the underloading driving cycles being determined as in mixed dynamic driving mode, engine 803 is enabled individually
The transmission system 802 of hybrid vehicle is driven, and the high casting die and low pressure part that enabled power battery 801 is hybrid vehicle
Electric energy is provided；When the heavily loaded driving cycles being determined as in mixed dynamic driving mode, enables engine 803 and power battery 801 is total
With the transmission system 802 of driving hybrid vehicle, the high casting die and low pressure part that power battery 801 is hybrid vehicle are enabled
Electric energy is provided, and it is that engine 803 provides booster torquemoment that enabled power battery 801 drives startup generator via belt；When true
When being set to the energy regenerating operating mode in mixed dynamic driving mode, the low pressure part and height that power battery 801 is hybrid vehicle are enabled
Casting die provides electric energy, enables transmission system 802 and charges for power battery 801.
It should be noted that step and module not all in above-mentioned each flow and each structure chart is all necessary, it can
To ignore certain steps or module according to the actual needs.Each step execution sequence be not it is fixed, can as needed into
Row adjustment.The division of each module is intended merely to facilitate the division functionally that description uses, and in actual implementation, a module can
It is realized by multiple modules with point, the function of multiple modules can also be realized by the same module, these modules can be located at same
In a equipment, it can also be located in different equipment.
Hardware module in each embodiment mechanically or can be realized electronically.For example, a hardware module
May include that the permanent circuit specially designed or logical device (such as application specific processor, such as FPGA or ASIC) are specific for completing
Operation.Hardware module can also include programmable logic device or circuit by software provisional configuration (as included general procedure
Device or other programmable processors) for executing specific operation.Mechanical system is used as specific, or using dedicated permanent
Property circuit, or hardware module is realized using the circuit (such as being configured by software) of provisional configuration, can according to cost and
It is temporal to consider to determine.
The present invention also provides a kind of machine readable storage medium, storage is as described herein mixed for making a machine execute
Close the instruction of the driving distribution method of power car.Specifically, system or device equipped with storage medium can be provided, at this
Store on storage medium realize above-described embodiment in any embodiment function software program code, and make the system or
The computer (or CPU or MPU) of person's device reads and executes the program code being stored in a storage medium.Further, it is also possible to logical
Crossing the instruction based on program code makes operating system of calculating hands- operation etc. to complete partly or completely practical operation.Also
The program code read from storage medium can be write be inserted into memory set in the expansion board in computer or
It writes in the memory being arranged in the expanding element being connected with computer, the then instruction based on program code makes to be mounted on and expand
CPU etc. in panel or expanding element comes execution part and whole practical operations, any in the above embodiment to realize
The function of embodiment.
Storage medium embodiment for providing program code include floppy disk, hard disk, magneto-optic disk, CD (such as CD-ROM,
CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, non-volatile memory card and ROM.Selectively,
It can be by communication network from download program code on server computer or cloud.
The above, only better embodiment of the invention, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the present invention
Within the scope of shield.
It should be noted that step and module not all in above-mentioned each flow and each system construction drawing is all necessary
, certain steps or module can be ignored according to the actual needs.Each step execution sequence be not it is fixed, can be according to need
It is adjusted.System structure described in the various embodiments described above can be physical arrangement, can also be logical construction, that is, have
A little modules may be realized by same physical entity, be realized by multiple physical entities alternatively, some modules may divide, alternatively, can be with
It is realized jointly by certain components in multiple autonomous devices.
In the above various embodiments, hardware cell mechanically or can be realized electrically.For example, a hardware list
Member may include permanent dedicated circuit or logic (such as special processor, FPGA or ASIC) to complete corresponding operating.Firmly
Part unit can also include programmable logic or circuit (such as general processor or other programmable processors), can by software into
The interim setting of row is to complete corresponding operating.Concrete implementation mode (mechanical system or dedicated permanent circuit or is faced
When the circuit that is arranged) can be determined based on cost and temporal consideration.
In conclusion the method for embodiment of the present invention includes：Based on power battery situation from the time of hybrid vehicle
It selects and determines applicable driving mode in driving mode, wherein candidate driving mode includes traditional driving mode and mixed dynamic driving mode；
It determines the operating mode being applicable in driving mode, wherein when the driving cycles being determined as in traditional driving mode, enables engine list
It solely drives the transmission system of hybrid vehicle and provides electric energy for the high casting die of hybrid vehicle, it is mixed to enable power battery
The low pressure part for closing power car provides electric energy；When the starting operating mode being determined as in mixed dynamic driving mode, power battery list is enabled
The solely transmission system of driving hybrid vehicle, and enabled power battery provides for the high casting die and low pressure part of hybrid vehicle
Electric energy.As it can be seen that embodiment of the present invention determines whether to drive vehicle using power battery based on the virtual condition of power battery,
It avoids engine and is forced to battery powered and the situation of tying down engine, reduce the oil consumption and discharge of vehicle.
Moreover, traditional driving mode of the embodiment of the present invention of embodiment of the present invention, which has, slides energy regenerating, system
The functions such as energy recycling, and low pressure part is powered (without high-powers attachmentes such as air-conditionings) by power battery (battery pack), and
Accumulator in non-traditional fuel vehicle, to while ensureing that battery pack does not tie down engine, also compare conventional fuel oil car
Oil consumption and emission effect have promotion.
The series of detailed descriptions listed above only for the present invention feasible embodiment specifically
It is bright, and not to limit the scope of the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of driving distribution method of hybrid vehicle, which is characterized in that this method includes：
Applicable driving mode, wherein institute are determined from the candidate driving mode of the hybrid vehicle based on power battery situation
It includes traditional driving mode and mixed dynamic driving mode to state candidate driving mode；
It determines the operating mode being applicable in driving mode, wherein when the driving cycles being determined as in traditional driving mode, enables
Engine is operated alone the transmission system of the hybrid vehicle and provides electric energy for the high casting die of the hybrid vehicle,
It enables the power battery and provides electric energy for the low pressure part of the hybrid vehicle；As being determined as in mixed dynamic driving mode
When walking operating mode, the transmission system of the hybrid vehicle is operated alone in enabled power battery, and enabled power battery is described
The high casting die and low pressure part of hybrid vehicle provide electric energy.
2. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that described to be based on power electric
Pond situation determines that applicable driving mode includes from the candidate driving mode of the hybrid vehicle：
The state-of-charge for detecting power battery determines when the state-of-charge is more than scheduled first threshold value and is applicable in driving
Pattern is mixed dynamic driving mode, when the state-of-charge is less than or equal to first threshold value, determines that applicable driving mode is
Traditional driving mode.
3. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that described to be based on power electric
Pond situation determines that applicable driving mode includes from the candidate driving mode of the hybrid vehicle：
The health status for detecting power battery determines when the health status is more than scheduled second threshold value and is applicable in driving
Pattern is mixed dynamic driving mode, when the health status is less than or equal to second threshold value, determines that applicable driving mode is
Traditional driving mode.
4. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that described to be based on power electric
Pond situation determines that applicable driving mode includes from the candidate driving mode of the hybrid vehicle：
The state-of-charge and health status for detecting power battery calculate state-of-charge and health status based on predetermined weighting algorithm
Weighted value；When the weighted value is more than scheduled third threshold value, determines that applicable driving mode is mixed dynamic driving mode, work as institute
When stating weighted value less than or equal to the third threshold value, determine that applicable driving mode is traditional driving mode.
5. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that the tradition drives mould
Formula further includes energy regenerating operating mode, and this method further includes：
When the energy regenerating operating mode being determined as in traditional driving mode, it is the hybrid vehicle to enable the engine
High casting die provides electric energy, enables the power battery and provides electric energy for the low pressure part of the hybrid vehicle, enables the biography
Dynamic system is the power battery charging.
6. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that the mixed dynamic driving mould
Formula further includes underloading driving cycles, and this method further includes：
When the underloading driving cycles being determined as in mixed dynamic driving mode, the hybrid vehicle is operated alone in enabled engine
Transmission system, and enabled power battery provides electric energy for the high casting die and low pressure part of the hybrid vehicle.
7. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that the mixed dynamic driving mould
Formula further includes heavily loaded driving cycles, and this method further includes：
When the heavily loaded driving cycles being determined as in mixed dynamic driving mode, enabled engine and power battery drive described mix jointly
The transmission system of power car is closed, enabled power battery provides electric energy for the high casting die and low pressure part of the hybrid vehicle,
And enabled power battery drives startup generator to provide booster torquemoment for the engine via belt.
8. the driving distribution method of hybrid vehicle according to claim 1, which is characterized in that the mixed dynamic driving mould
Formula further includes energy regenerating operating mode, and this method further includes：
When the energy regenerating operating mode being determined as in mixed dynamic driving mode, it is the hybrid vehicle to enable the power battery
Low pressure part and high casting die provide electric energy, enable the transmission system be the power battery charging.
9. a kind of hybrid vehicle, which is characterized in that including：
Power battery is connect via motor with transmission system；
Engine is connect with transmission system；
Entire car controller is applicable in for being determined from the candidate driving mode of the hybrid vehicle based on power battery situation
Driving mode, wherein candidate's driving mode includes traditional driving mode and mixed dynamic driving mode；Determine the applicable driving
Operating mode in pattern, wherein：When the driving cycles being determined as in traditional driving mode, enabled engine is operated alone described mixed
It closes the transmission system of power car and provides electric energy for the high casting die of the hybrid vehicle, it is institute to enable the power battery
The low pressure part for stating hybrid vehicle provides electric energy；When the starting operating mode being determined as in mixed dynamic driving mode, power electric is enabled
The transmission system of the hybrid vehicle is operated alone in pond, and the high casting die that enabled power battery is the hybrid vehicle
Electric energy is provided with low pressure part；When the energy regenerating operating mode being determined as in traditional driving mode, it is described to enable the engine
The high casting die of hybrid vehicle provides electric energy, enables the power battery and provides electricity for the low pressure part of the hybrid vehicle
Can, it is the power battery charging to enable the transmission system；When the underloading driving cycles being determined as in mixed dynamic driving mode,
The transmission system of the hybrid vehicle is operated alone in enabled engine, and enabled power battery is the hybrid vehicle
High casting die and low pressure part provide electric energy；When the heavily loaded driving cycles being determined as in mixed dynamic driving mode, enable engine and
Power battery drives the transmission system of the hybrid vehicle jointly, enables the height that power battery is the hybrid vehicle
Casting die and low pressure part provide electric energy, and enabled power battery drives startup generator to provide power-assisted for the engine via belt
Torque；When the energy regenerating operating mode being determined as in mixed dynamic driving mode, it is the hybrid electric vehicle to enable the power battery
Low pressure part and high casting die provide electric energy, enable the transmission system be the power battery charging.
10. a kind of computer readable storage medium, which is characterized in that be wherein stored with computer-readable instruction, which can
Reading instruction is used for the step of executing the driving distribution method such as hybrid vehicle described in any item of the claim 1 to 8.
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| CN201810607819.2A CN108773371A (en) | 2018-06-13 | 2018-06-13 | The driving distribution method and hybrid vehicle of hybrid vehicle |
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Application publication date: 20181109 |