CN106143482B - Hybrid vehicle and its control method and device - Google Patents
Hybrid vehicle and its control method and device Download PDFInfo
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- CN106143482B CN106143482B CN201510160673.8A CN201510160673A CN106143482B CN 106143482 B CN106143482 B CN 106143482B CN 201510160673 A CN201510160673 A CN 201510160673A CN 106143482 B CN106143482 B CN 106143482B
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
Abstract
The invention discloses a kind of control methods of hybrid vehicle, comprising: control module receives SOC target point set by user, and SOC target point set by user is sent to electric machine controller；The current SOC value of electric machine controller acquisition power battery；Electric machine controller selects corresponding control strategy according to SOC target point set by user and current SOC value；And in the case where meeting vehicle and driving required power, charge and discharge control is carried out to hybrid vehicle according to the control strategy of selection.This method realizes that driver carries out target control to the power battery electricity of hybrid vehicle by the set-up function of introducing SOC target point.The invention also discloses a kind of control device of hybrid vehicle and hybrid vehicles.
Description
Technical field
The present invention relates to Development of HEV Technology field more particularly to a kind of control methods of hybrid vehicle, dress
It sets and hybrid vehicle.
Background technique
Currently, hybrid vehicle for power battery electricity control method be generally by vehicle control system from
Identify the electricity to maintain power battery.Specifically, when power battery electricity is lower than a threshold value, hybrid vehicle starting
Engine controls vehicle not and can be carried out electric-only mode driving with for power battery charging；When power battery electricity is because of feedback
Or when generating electricity higher than a threshold value, the controllable engine misses started by power generation, and start and stop are responded again.
As can be seen that the electricity to maintain power battery cannot be adjusted by driver's pro-active intervention in above-mentioned whole process
Amount.For example, certain hybrid electric vehicle has first mode and second mode, when the hybrid vehicle is first mode,
The hybrid vehicle can maintain as far as possible the electricity in high tension battery constant, even if being consumed under steam, can also pass through
Engine and energy regenerating are battery charging, and this mode only uses seldom a part of electric energy；When the hybrid vehicle is
When second mode, which can charge as far as possible for high tension battery, for the longer pure motor driving of lower a distance
It prepares.
But the height that the model selection of above-mentioned hybrid electric vehicle, power battery electricity maintain is by vehicle itself
It determines, although embodying the part expectation of driver, is not given to the target of driver definitely.
Summary of the invention
The purpose of the present invention is intended to solve above-mentioned one of technical problem at least to a certain extent.
For this purpose, the first purpose of this invention is to propose a kind of control method of hybrid vehicle.This method passes through
The set-up function of SOC target point is introduced, realizes that driver carries out target control to the power battery electricity of hybrid vehicle.
Second object of the present invention is to propose a kind of control device of hybrid vehicle.
Third object of the present invention is to propose a kind of hybrid vehicle.
To achieve the goals above, the control method of the hybrid vehicle of first aspect present invention embodiment, comprising: control
Molding block receives SOC target point set by user, and the SOC target point set by user is sent to electric machine controller；Institute
State the current SOC value that electric machine controller obtains power battery；The electric machine controller is according to the SOC target point set by user
Corresponding control strategy is selected with the current SOC value；And according to the control strategy of selection to the hybrid vehicle into
Row charge and discharge control.
The control method of hybrid vehicle according to an embodiment of the present invention is received set by user by control module
SOC target point, and SOC target point set by user is sent to electric machine controller, electric machine controller obtains working as power battery
Preceding SOC value, and corresponding control strategy is selected according to SOC target point set by user and current SOC value, and according to selection
Control strategy carries out charge and discharge control to hybrid vehicle, i.e., by introducing the set-up function of SOC target point, realizes driver
Target control is carried out to the power battery electricity of hybrid vehicle.
To achieve the goals above, the control device of the hybrid vehicle of second aspect of the present invention embodiment, comprising: control
Molding block and electric machine controller, wherein the control module, for receiving SOC target point set by user, and by the use
The SOC target point of family setting is sent to electric machine controller；The electric machine controller, for obtaining the current SOC value of power battery,
And corresponding control strategy is selected according to the SOC target point set by user and the current SOC value, and according to selection
Control strategy carries out charge and discharge control to the hybrid vehicle.
The control device of hybrid vehicle according to an embodiment of the present invention is received set by user by control module
SOC target point, and SOC target point set by user is sent to electric machine controller, electric machine controller obtains working as power battery
Preceding SOC value, and corresponding control strategy is selected according to SOC target point set by user and current SOC value, and according to selection
Control strategy carries out charge and discharge control to hybrid vehicle, i.e., by introducing the set-up function of SOC target point, realizes driver
Target control is carried out to the power battery electricity of hybrid vehicle.
In order to realize above-described embodiment, the hybrid vehicle of third aspect present invention embodiment, including the present invention second
The control device of the hybrid vehicle of aspect embodiment.
Hybrid vehicle according to an embodiment of the present invention can receive user's setting by the control module in control device
SOC target point, and SOC target point set by user is sent to electric machine controller, electric machine controller obtains power battery
Current SOC value, and corresponding control strategy is selected according to SOC target point set by user and current SOC value, and according to selection
Control strategy to hybrid vehicle carry out charge and discharge control, i.e., by introduce SOC target point set-up function, realize drive
Member carries out target control to the power battery electricity of hybrid vehicle.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein
Fig. 1 is the flow chart of the control method of hybrid vehicle according to an embodiment of the invention；
Fig. 2 is that the control method of hybrid vehicle according to an embodiment of the present invention is that the SOC target point that user provides is set
The schematic diagram in demarcation face；
Fig. 3 (a) is the schematic diagram of the energy trend when SOC target point is less than current SOC value in hybrid vehicle；
Fig. 3 (b) is the schematic diagram of the energy trend when SOC target point is greater than current SOC value in hybrid vehicle；
Fig. 4 is the interactive examples figure of the control method of hybrid vehicle according to an embodiment of the invention；
Fig. 5 is the exemplary diagram of the control method of hybrid vehicle according to an embodiment of the invention；
Fig. 6 is the structural schematic diagram of the control device of hybrid vehicle according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings control method, device and the mixing for describing hybrid vehicle according to an embodiment of the present invention are dynamic
Power automobile.
Fig. 1 is the flow chart of the control method of hybrid vehicle according to an embodiment of the invention.As shown in Figure 1,
The control method of the hybrid vehicle may include:
S101, control module receive SOC set by user (State of charge, power battery charging capacity with it is specified
The ratio of capacity) target point, and SOC target point set by user is sent to electric machine controller.
For example, it is assumed that the control method of the hybrid vehicle of the embodiment of the present invention provides SOC target point for user
Set-up function, as shown in Fig. 2, the control method for hybrid vehicle of the present invention is that the SOC target point that user provides sets boundary
The schematic diagram in face, wherein the SOC target point, which sets interface, can be located in the multimedia screen in vehicle, and user can be by manual
Slider bar of the sliding as set interface in Fig. 2, to set SOC target point.Control module in using control module as multimedia is
Example, when detecting that user sets SOC target point, multimedia control module can receive SOC target point set by user, and can incite somebody to action
The SOC target point set by user is sent to electric machine controller.Meanwhile can also to remember this set by user for multimedia control module
SOC target point changes this target until user manually sets still to default the SOC target point of the setting when powering on next time
Point.Wherein, in an embodiment of the present invention, the setting range of SOC target point can put centered on default SOC target point it is pre-
Within the scope of if.For example, i.e. user can be default at this as shown in Fig. 2, the range that can set of SOC target point is 15%~70%
SOC target point is set in range (15%~70%).
S102, electric machine controller obtain the current SOC value of power battery.
Specifically, electric machine controller can obtain the current power that power battery manager is sent in real time in hybrid vehicle
The actual soc-value of battery, the i.e. current SOC value of power battery.
S103, electric machine controller select corresponding control strategy according to SOC target point set by user and current SOC value.
Specifically, in an embodiment of the present invention, electric machine controller is according to SOC target point set by user and currently
SOC value selects the specific implementation of corresponding control strategy can are as follows: if SOC target point is less than current SOC value, selects to lead
Dynamic electric discharge strategy；If SOC target point is equal to current SOC value, battery capacity is selected to maintain strategy；If SOC target point is big
In current SOC value, then driving power generation strategies are selected.
More specifically, SOC target point set by user can be compared with current SOC value for electric machine controller, and according to
Comparison result selects corresponding control strategy.For example, when SOC target point is less than current SOC value, and vehicle is in hybrid power
When system drive, electric machine controller can take the initiative the strategy that discharges, and power motor is allowed to participate in output power as much as possible, reduce hair
Motivation oil consumption, the energy trend in hybrid vehicle can be as shown in Fig. 3 (a) at this time, and electric machine controller preset can discharge
Power control motor M does manual work with output torque, and energy is driven by inverter 2 and gives motor M by power battery 1 at this time, i.e. motor M
Engine E is assisted to drive driving wheel 3 to run.
For another example, when SOC target point is equal to current SOC value, hybrid vehicle can maintain the electricity of power battery as far as possible
Constant, even if there is part electric quantity consumption in the process of moving, it is power battery charging that electricity can be also recycled by energy feedback, with
The electricity for making hybrid vehicle maintain power battery in the process of moving is constant, mainly defeated to driving wheel by engine at this time
Torque out, it will be understood that the battery capacity maintains strategy suitable for the maintenance mode of vehicle.
For another example, when SOC target point is greater than current SOC value, hybrid vehicle can be by way of driving power generation
The charging of power battery, keeps electricity close to SOC target point set by user as far as possible, and the energy trend in hybrid vehicle can at this time
As shown in Fig. 3 (b), under conditions of engine meets and drives, high power is operated in so that engine E by controlling engine E
A part of torque export and give motor M, motor M is that power battery 1 charges by workmanship.That is, hybrid power system
System is during driving, and under the premise of guaranteeing vehicle driving demand power, control engine operates in efficient region so that hair
A part of torque of motivation is exported to motor so that motor is power battery charging, i.e., at this time engine respectively to driving wheel and
Motor output torque, motor receive and the mechanical energy are converted to electric energy after the output torque, can with for power battery charging
To understand, which is suitable for the economic model of vehicle.
S104, in the case where meeting vehicle and driving required power, according to the control strategy of selection to hybrid vehicle into
Row charge and discharge control.
Specifically, in an embodiment of the present invention, when the control strategy that electric machine controller selects is active discharge strategy
When, electric machine controller can first judge the current operating status of motor, and when motor is currently at halted state, control motor is opened
It is dynamic, and with default rated power control motor work with output torque, so that current SOC value is equal to SOC target point；When motor is worked as
When preceding in operating status, judge whether motor meets motor driven demand, if it is, directly with default rated power control
Motor works with output torque, so that current SOC value is equal to SOC target point.Wherein, in an embodiment of the present invention, above-mentioned pre-
If rated power can be Engine Matching and simulate what the actual conditions such as road conditions matching obtained.That is, if power battery
Electricity is in higher state, and to reduce fuel consumption as far as possible, in HEV mode, (i.e. engine cooperates with motor and provides driving force drive
The mode of dynamic vehicle) a kind of operating condition under, electric machine controller will distribute more torques and give motor output, to consume power battery
Electric energy, motor and engine are jointly to driving wheel output torque at this time, to help the traveling of vehicle, it will be understood that the active release
Electric strategy is suitable for the motor pattern of vehicle.
It should be noted that when electric machine controller enters active discharge strategy, electric system first self-test and can judge electricity
Machine can participate in driving, that is, whether normal detect each module temperature: electric machine controller needs to acquire motor temperature, water temperature, IGBT
(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) temperature, IPM temperature, when each module temperature
When spending high, then motor is not allowed to work；Meanwhile also needing it is judged whether or not collision alarm: when vehicle severe crash, being
It ensures personal safety, drive system need to be immediately closed off.When electric machine controller judges that each module temperature is normal, and vehicle collisionless is believed
Number when, it may be determined that motor can participate in vehicle driving.
When the control strategy that electric machine controller selects maintains strategy for battery capacity, electric machine controller can first judge to start
Whether machine, which can individually meet vehicle driving, requires, if it is, control motor stops output and power battery stops electric discharge, such as
Fruit is no, then controls motor and participate in output, and it is pre- further to judge whether the difference between current SOC value and SOC target point belongs to
If in range, if it is, electricity is recycled in control motor power feedback, if it is not, then judging that it is current that SOC target point is greater than
When SOC value, control hybrid vehicle enters corresponding driving power generation strategies, or is judging SOC target point less than current SOC
When value, control hybrid vehicle enters corresponding active discharge strategy.That is, entering battery in electric machine controller selection
When electricity maintains strategy, electric machine controller can first judge whether engine can individually meet vehicle driving and require, wherein engine
Vehicle driving cannot individually be met to require can be regarded as: according to special outside current gearbox-gear, engine speed and engine
Linearity curve, even if engine can not reach vehicle driving power demand by maximum power output, driving refers to motor control here
Device processed judges the conditions such as current speed, gas pedal depth, the gradient, determines the demand power of vehicle current driving.Judging
When engine can individually meet vehicle driving, then motor does not export and battery does not discharge；Vehicle cannot individually be met in engine
When driving, control motor participates in output to supplement the deficiency of engine, and judges the difference of current SOC value Yu SOC target point again
Not within a preset range (between such as positive and negative 1%), if electricity is recycled in motor power feedback, so that hybrid vehicle
It maintains the electricity of power battery constant in the process of moving, if not existing, judges that current SOC value and the difference of SOC target point are big
It is small, and selected to enter drive a vehicle corresponding power generation strategies or active discharge strategy according to judging result: i.e. if current SOC value with
Difference between SOC target point is positive number, then enters active discharge strategy；If the difference between current SOC value and SOC target point
Value is negative, then enters driving power generation strategies.
When the control strategy that electric machine controller selects for driving power generation strategies when, electric machine controller can first judge that engine is
It is no individually to meet vehicle driving requirement, if it is not, then control motor participates in output, if it is, control motor stopping is defeated
Out and power battery stops electric discharge, and further judges whether the output torque of engine is less than preset value, if so, obtaining
Difference between SOC target point and current SOC value can determine generated output according to difference later, and be controlled according to generated output
The output of engine is so that motor power generation, i.e., charge to power battery.Specifically, in an embodiment of the present invention,
Generated output is determined according to difference, and the output of engine is controlled so that motor generates electricity, i.e., to power electric according to generated output
The specific implementation process that pond is charged can are as follows: when difference is greater than or equal to first threshold, determines that generated output is the first function
Rate value, and with the torque of the first performance number control engine so that motor generates electricity, so that current SOC value is equal to SOC target point；
When difference is less than first threshold and is greater than or equal to second threshold, determine that generated output is the second performance number, and with the second function
The torque of modulus control engine is so that motor generates electricity, so that current SOC value is equal to SOC target point, wherein the first performance number
Greater than the second performance number；When difference is less than second threshold and is greater than or equal to third threshold value, determine that generated output is third function
Rate value, and with the torque of third performance number control engine so that motor generates electricity, so that current SOC value is equal to SOC target point,
Wherein, the second performance number is greater than third performance number；When difference is equal to four threshold values, determine that generated output is the 4th performance number,
And with the torque of the 4th performance number control engine so that motor generates electricity, so that current SOC value is equal to SOC target point, wherein
Third threshold value is greater than the 4th threshold value, and third performance number is greater than the 4th performance number.In addition, in an embodiment of the present invention, the first threshold
Value, second threshold, third threshold value and the 4th threshold value are successively successively decreased.
For example, determining power generation when the difference of SOC target point and current SOC value is greater than or equal to A% (i.e. first threshold)
Power maximum can be a kilowatts (i.e. the first performance number), i.e. engine drives demand power under conditions of meeting driving, in vehicle
On the basis of in overabsorption X power to engine, that is to say, that a kilowatts of power should be vehicle driving demand power+X, and with this
The torque of a kilowatts of control engine of power is so that motor generates electricity, so that current SOC value is equal to SOC target point；When SOC target
When the difference of point and current SOC value is less than A% and is greater than or equal to B% (second threshold), determine that generated output maximum can be b thousand
Watt, i.e. engine is started on the basis of vehicle drives demand power in overabsorption Y power under conditions of meeting driving
Machine, that is to say, that b kilowatts of power should be vehicle driving demand power+Y；When SOC target point and the difference of current SOC value are less than
B% and when being greater than or equal to C% (i.e. third threshold value) determines that generated output maximum can be for c kilowatts, i.e., engine drives meeting
Under conditions of, in overabsorption Z power to engine on the basis of vehicle drives demand power, that is to say, that c kilowatts of power is answered
Demand power+Z is driven for vehicle；When the difference of SOC target point and current SOC value is equal to 0% (i.e. the 4th threshold value), hair is determined
Electrical power maximum can be 0 kilowatt, that is, exit driving generating function, wherein a > b > c > 0, X > Y > Z > 0.
In order to enable those skilled in the art can clearly understand the present invention, below in conjunction with Fig. 4 and Fig. 5 couples
The present invention is further described.
For example, it is assumed that hybrid vehicle of the present invention provides the setting interface of SOC target point, Yong Huke for user
By " traveling setting " option of the multimedia main interface in hybrid vehicle, interface, Yong Huke are set into SOC target point
The setting (S01) of SOC target point is carried out by the setting interface.When multimedia control module detects that user sets SOC mesh
After punctuate, multimedia control module can send SOC target point (S02) set by user to electric machine controller, meanwhile, multimedia
Control module remembers the SOC target point (S03) set by user.At this point, power battery manager can be sent to electric machine controller
The current actual soc-value of power battery (S04).Electric machine controller is receiving SOC target point set by user and current reality
The sum of border SOC value, can determine whether the working condition (S05) of speed and engine, while judge SOC target point and currently practical SOC
Value, compares the size of the two, and takes different control strategies (S06) according to comparison result.
Later, charge and discharge control can be carried out to hybrid vehicle according to the control strategy taken: according to the control taken
Before system strategy carries out charge and discharge control to hybrid vehicle, firstly, as shown in figure 5, whether need to judge hybrid vehicle
In hybrid mode (i.e. HEV mode) (S501), if so, further judge whether engine starts (S502), if so,
Then further judge whether target SOC set by user (i.e. SOC target point) is less than currently practical SOC value (S503).If judgement
Target SOC (i.e. SOC target point) is less than currently practical SOC value, then enters active discharge strategy (S504), at this point, electric system
Self-test, and judge whether motor can satisfy driving and require (S505), i.e. whether just electric system can first detect each module temperature
It is normal: electric machine controller need to acquire motor temperature, water temperature, IGBT (Insulated Gate Bipolar Transistor, absolutely
Edge grid bipolar junction transistor) temperature, IPM temperature then do not allow motor to work when each module temperature is excessively high；Meanwhile it also needing to sentence
It is disconnected currently whether to have collision alarm: when vehicle severe crash, to ensure personal safety, drive system need to be immediately closed off.Work as electricity
Machine controller judges that each module temperature is normal, and when vehicle collisionless signal, it may be determined that motor can participate in vehicle driving.If disconnected
Motor can satisfy driving and require, then distributes the power of motor of specified M Kw for driving, remaining driving power is mentioned by engine
For (S506).
If it is determined that target SOC is equal to currently practical SOC value (S507), then enters electricity and maintain tactful (S508), at this time
Judge whether engine can individually meet vehicle driving (S509), if so, keeping motor not export, and battery does not discharge
(S510), if it is not, then controlling motor participates in output (S511), in this process, the electricity of maintenance power battery as far as possible is constant.It can
To understand.It is maintained in strategic process in the electricity, when controlling motor participation output, also can determine whether current SOC value and SOC target
Difference between point or not in the preset range (such as positive and negative 1% section), if, electricity is recycled by energy content of battery feedback,
If not existing, determine that entering corresponding active discharge strategy or driving sends out according to the size between current SOC value and SOC target point
Electric strategy.
If it is determined that target SOC is greater than currently practical SOC value (S512), then enter driving power generation strategies (S513), at this point,
It need to first judge whether engine can individually meet driving (S514), if it is not, then controlling motor participates in output (S515), if so,
Then motor is kept not export, and battery does not discharge (S516).If the difference of target SOC and currently practical SOC value is greater than or waits simultaneously
In a%, then under conditions of engine meets and drives, multi output X KW is for power generation (S517) of driving a vehicle；If target SOC and current
The difference of actual soc-value is greater than or equal to b%, then under conditions of engine meets and drives, multi output Y KW is for power generation of driving a vehicle
(S518)；If the difference of target SOC and currently practical SOC value is greater than or equal to c%, under conditions of engine meets and drives,
Multi output Z KW is for power generation (S519) of driving a vehicle；If target SOC is equal to 0 with currently practical SOC value, driving power generation function is exited
Energy (S520), wherein a > b > c > 0, X > Y > Z > 0.To make the currently practical SOC value of power battery as far as possible close to
SOC target point set by user.
In conclusion the present invention is mainly based upon hybrid electric vehicle power motor, power battery and engine three's
In the process of moving, electric machine controller monitors the SOC that user is set by multimedia for energy-saving control method, i.e. hybrid vehicle
Target point, vehicle power battery electricity, power battery charge-discharge electric power, the work economic zone of engine, vehicle demand torque,
The working conditions such as speed are distributed by adjusting driving generating function, motor and engine output torque, power battery electricity are enabled to lean on
Nearly SOC target point.
The control method of hybrid vehicle of the invention increases while taking into account hybrid power system economy as a result,
Strong interaction between hybrid vehicle and driver, i.e. driver can adjust SOC target point by multimedia, enable power
Battery capacity is maintained at the desired level of driver, meets the needs of driver is to power battery electricity.
The control method of hybrid vehicle according to an embodiment of the present invention is received set by user by control module
SOC target point, and SOC target point set by user is sent to electric machine controller, electric machine controller obtains working as power battery
Preceding SOC value, and corresponding control strategy is selected according to SOC target point set by user and current SOC value, and meeting vehicle
It drives under required power, charge and discharge control is carried out to hybrid vehicle according to the control strategy of selection, that is, passes through introducing
The set-up function of SOC target point realizes that driver carries out target control to the power battery electricity of hybrid vehicle.
In order to realize above-described embodiment, the invention also provides a kind of control devices of hybrid vehicle.
Fig. 6 is the structural schematic diagram of the control device of hybrid vehicle according to an embodiment of the invention.Such as Fig. 6 institute
Show, the control device of the hybrid vehicle includes control module 10 and electric machine controller 20.
Specifically, control module 10 can be used for receiving SOC target point set by user, and by SOC target set by user
Point is sent to electric machine controller 20.For example, it is assumed that the control device of the hybrid vehicle of the embodiment of the present invention is user
SOC target point set-up function is provided, as shown in Fig. 2, the control device for hybrid vehicle of the present invention is SOC that user provides
Target point sets the schematic diagram at interface, and user can be by sliding the slider bar as set interface in Fig. 2, to set SOC mesh manually
Punctuate.When control module 10 detects that user sets SOC target point, control module 10 can receive SOC target set by user
Point, and the SOC target point set by user can be sent to electric machine controller 20.Meanwhile control module 10 can also remember the use
The SOC target point of family setting changes still to default the SOC target point of the setting when powering on next time until user manually sets
Become this target point.Wherein, in an embodiment of the present invention, the setting range of SOC target point can be in being with default SOC target point
Within the preset range of heart point.For example, i.e. user can as shown in Fig. 2, the range that can set of SOC target point is 15%~70%
SOC target point is set in the preset range (15%~70%).
Electric machine controller 20 can be used for obtaining the current SOC value of power battery, and according to SOC target point set by user and
Current SOC value selects corresponding control strategy, and in the case where meeting vehicle and driving required power, according to the control plan of selection
Charge and discharge control slightly is carried out to hybrid vehicle.
Specifically, in an embodiment of the present invention, electric machine controller 20 is according to SOC target point set by user and currently
SOC value selects the specific implementation process of corresponding control strategy can are as follows: when SOC target point is less than current SOC value, selection is actively
Electric discharge strategy；When SOC target point is equal to current SOC value, battery capacity is selected to maintain strategy；It is greater than in SOC target point current
When SOC value, selection driving power generation strategies.
More specifically, SOC target point set by user can be compared with current SOC value for electric machine controller 20, and root
Corresponding control strategy is selected according to comparison result.For example, when SOC target point is less than current SOC value, and vehicle is in mixing and moves
When Force system drives, electric machine controller 20 can take the initiative the strategy that discharges, and power motor is allowed to participate in output power, drop as much as possible
Low engine consumption, the energy trend in hybrid vehicle can be as shown in Fig. 3 (a) at this time, and electric machine controller can be preset
Discharge power controls motor M workmanship with output torque, and energy is driven by inverter 2 and gives motor M by power battery 1 at this time, i.e.,
Motor M assists engine E to drive driving wheel 3 to run.
For another example, when SOC target point is equal to current SOC value, hybrid vehicle can maintain the electricity of power battery as far as possible
Constant, even if there is part electric quantity consumption in the process of moving, it is power battery charging that electricity can be also recycled by energy feedback, with
The electricity for making hybrid vehicle maintain power battery in the process of moving is constant, mainly pass through engine at this time to driving wheel
Output torque, it will be understood that the battery capacity maintains strategy suitable for the maintenance mode of vehicle.
For another example, when SOC target point is greater than current SOC value, hybrid vehicle can be by way of driving power generation
The charging of power battery, keeps electricity close to SOC target point set by user as far as possible, and the energy trend in hybrid vehicle can at this time
As shown in Fig. 3 (b), under conditions of engine meets and drives, high power is operated in so that engine E by controlling engine E
A part of torque export and give motor M, motor M is that power battery 1 charges by workmanship.That is, hybrid power system
System is during driving, and under the premise of guaranteeing vehicle driving demand power, control engine operates in efficient region so that hair
A part of torque of motivation is exported to motor so that motor is power battery charging, i.e., at this time engine respectively to driving wheel and
Motor output torque, motor receive and the mechanical energy are converted to electric energy after the output torque, can with for power battery charging
To understand, which is suitable for the economic model of vehicle.
Specifically, in an embodiment of the present invention, electric machine controller 20 can be in the following manner to realize active discharge
Strategy: electric machine controller 20 can first judge the current operating status of motor, when motor is currently at halted state, control motor
Starting, and with default rated power control motor work with output torque, so that current SOC value is equal to SOC target point；Work as motor
When being currently at operating status, judge whether motor meets motor driven demand, if it is, directly to preset rated power control
Motor work processed is with output torque, so that current SOC value is equal to SOC target point.Wherein, in an embodiment of the present invention, above-mentioned
Default rated power can be Engine Matching and simulate what the actual conditions such as road conditions matching obtained.That is, if power electric
Pond electricity is in higher state, and to reduce fuel consumption as far as possible, in HEV mode, (i.e. engine cooperates with motor and provides driving force
Drive the mode of vehicle) under, electric machine controller 20 will distribute more torques and export to motor, to consume the electric energy of power battery,
Motor and engine are jointly to driving wheel output torque at this time, to help the traveling of vehicle, it will be understood that the active discharge strategy
Motor pattern suitable for vehicle.
It should be noted that when electric machine controller 20 enters active discharge strategy, electric system first self-test and can judge
Motor can participate in driving, that is, whether normal detect each module temperature: electric machine controller 20 need to acquire motor temperature, water temperature,
IGBT temperature, IPM temperature then do not allow motor to work when each module temperature is excessively high；Meanwhile also need it is judged whether or not
Collision alarm: when vehicle severe crash, to ensure personal safety, drive system need to be immediately closed off.When electric machine controller 20 is sentenced
Each module temperature that breaks is normal, and when vehicle collisionless signal, it may be determined that motor can participate in vehicle driving.
In an embodiment of the present invention, electric machine controller 20 can realize that battery capacity maintains strategy in the following manner:
Electric machine controller 20 can first judge whether engine can individually meet vehicle driving and require, if it is, control motor stops
Output and power battery stop discharging, if it is not, then control motor participates in output, and further judge current SOC value and SOC mesh
Whether the difference between punctuate belongs in preset range, if it is, electricity is recycled in control motor power feedback, if it is not, then
When judging that SOC target point is greater than current SOC value, control hybrid vehicle enters corresponding driving power generation strategies, Huo Zhe
When judging that SOC target point is less than current SOC value, control hybrid vehicle enters corresponding active discharge strategy.That is,
When the selection of electric machine controller 20 enters battery capacity maintenance strategy, electric machine controller 20 can first judge whether engine can be independent
Meet vehicle driving to require, wherein engine cannot individually meet vehicle driving and require can be regarded as: according to when front gear box shelves
Position, engine speed and engine test bench characteristic curve drive even if engine can not reach vehicle by maximum power output
Power demand, driving refers to that electric machine controller 20 judges the conditions such as current speed, gas pedal depth, the gradient here, determines
The demand power of vehicle current driving.Judge engine can individually meet vehicle driving when, then motor do not export and battery not
Electric discharge；When engine cannot individually meet vehicle driving, control motor participates in output, and judges current SOC value and SOC mesh again
The difference of punctuate is not within a preset range (between such as positive and negative 1%), if electricity is recycled in motor power feedback, so that mixed
Close power vehicle maintains the electricity of power battery constant in the process of moving, if not existing, judges current SOC value and SOC target
The size of the difference of point, and selected to enter driving power generation strategies or active discharge strategy according to judging result.
In an embodiment of the present invention, electric machine controller 20 can be in the following manner to realize power generation strategies of driving a vehicle: judgement
Whether engine, which can individually meet vehicle driving, requires, if it is not, then control motor participates in output, if it is, control electricity
Machine stops output and power battery stops electric discharge, and further judges whether the output torque of engine is less than preset value, if so,
Then obtain the difference between SOC target point and current SOC value；And generated output is determined according to difference, and according to generated output
The output of engine is controlled so that motor power generation, i.e., charge to power battery.Specifically, in the embodiment of the present invention
In, electric machine controller 20 determines generated output according to difference, and controls the output of engine so that motor according to generated output
Power generation, i.e., the specific implementation process to charge to power battery can are as follows: when difference is greater than or equal to first threshold, determines hair
Electrical power is the first performance number, and the output of engine is controlled according to the first performance number；When difference is less than first threshold and is greater than
Or when being equal to second threshold, determine that generated output is the second performance number, and the output of engine is controlled according to the second performance number,
In, the first performance number is greater than the second performance number；When difference is less than second threshold and is greater than or equal to third threshold value, power generation is determined
Power is third performance number, and the output of engine is controlled according to third performance number, wherein the second performance number is greater than third power
Value；When difference is equal to four threshold values, determine that generated output is the 4th performance number, and engine is controlled according to the 4th performance number
Output, wherein third threshold value is greater than the 4th threshold value, and third performance number is greater than the 4th performance number.In addition, in the embodiment of the present invention
In, first threshold, second threshold, third threshold value and the 4th threshold value are successively successively decreased.
For example, when the difference of SOC target point and current SOC value is greater than or equal to A% (i.e. first threshold), motor control
Device 20 determines that generated output maximum can be a kilowatts, i.e. engine is under conditions of meeting driving, in vehicle driving demand power
On the basis of in overabsorption X power to engine, that is to say, that a kilowatts of power should be vehicle driving demand power+X, and with the function
The torque of a kilowatts of control engine of rate is so that motor generates electricity, so that current SOC value is equal to SOC target point；When SOC target point
When being less than A% with the difference of current SOC value and be greater than or equal to B% (second threshold), electric machine controller 20 determines generated output
Maximum can be b kilowatts, i.e. engine is under conditions of meeting driving, in overabsorption Y on the basis of vehicle drives demand power
Power is to engine, that is to say, that b kilowatts of power should be vehicle driving demand power+Y；When SOC target point and current SOC value
Difference be less than B% and be greater than or equal to C% (i.e. third threshold value) when, electric machine controller 20 determine generated output maximum can be c
Kilowatt, i.e. engine is started on the basis of vehicle drives demand power in overabsorption Z power under conditions of meeting driving
Machine, that is to say, that c kilowatts of power should be vehicle driving demand power+Z；When SOC target point and the difference of current SOC value are equal to
When 0% (i.e. the 4th threshold value), electric machine controller 20 determines that generated output maximum can be 0 kilowatt, that is, exits driving generating function,
In, a > b > c > 0, X > Y > Z > 0.
In conclusion hybrid vehicle is in the process of moving, electric machine controller 20 monitors user and is set by multimedia
SOC target point, vehicle power battery electricity, power battery charge-discharge electric power, the work economic zone of engine, vehicle demand
The working conditions such as torque, speed are distributed by adjusting driving generating function, motor and engine output torque, enable power battery
Electricity is close to SOC target point.
The control device of hybrid vehicle of the invention increases while taking into account hybrid power system economy as a result,
Strong interaction between hybrid vehicle and driver, i.e. driver can adjust SOC target point by multimedia, enable power
Battery capacity is maintained at the desired level of driver, meets the needs of driver is to power battery electricity.
The control device of hybrid vehicle according to an embodiment of the present invention is received set by user by control module
SOC target point, and SOC target point set by user is sent to electric machine controller, electric machine controller obtains working as power battery
Preceding SOC value, and corresponding control strategy is selected according to SOC target point set by user and current SOC value, and according to selection
Control strategy carries out charge and discharge control to hybrid vehicle, i.e., by introducing the set-up function of SOC target point, realizes driver
Target control is carried out to the power battery electricity of hybrid vehicle.
In order to realize above-described embodiment, the invention also provides a kind of hybrid vehicles, including any of the above-described implementation
The control device of hybrid vehicle described in example.
Hybrid vehicle according to an embodiment of the present invention can receive user's setting by the control module in control device
SOC target point, and SOC target point set by user is sent to electric machine controller, electric machine controller obtains power battery
Current SOC value, and corresponding control strategy is selected according to SOC target point set by user and current SOC value, and according to selection
Control strategy to hybrid vehicle carry out charge and discharge control, i.e., by introduce SOC target point set-up function, realize drive
Member carries out target control to the power battery electricity of hybrid vehicle.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of control method of hybrid vehicle, which comprises the following steps:
Control module receives SOC target point set by user, and the SOC target point set by user is sent to motor control
Device；
The electric machine controller obtains the current SOC value of power battery；
The electric machine controller selects corresponding control plan according to the SOC target point set by user and the current SOC value
Slightly；Wherein, the electric machine controller selects corresponding control according to the SOC target point set by user and the current SOC value
Strategy processed specifically includes:
If the SOC target point is less than the current SOC value, active discharge strategy is selected；Wherein, the active discharge plan
Somewhat body includes: the operating status for judging that motor is current；When the motor is currently at halted state, controls the motor and open
It is dynamic, and the motor work is controlled with output torque, so that current SOC value is equal to the SOC target point with default rated power；
When the motor is currently at operating status, judge whether motor meets motor driven demand, if it is, directly with described
Default rated power controls the motor work with output torque, so that current SOC value is equal to the SOC target point；
If the SOC target point is equal to the current SOC value, battery capacity is selected to maintain strategy；
If the SOC target point is greater than the current SOC value, driving power generation strategies are selected；
In the case where meeting vehicle and driving required power, charge and discharge is carried out to the hybrid vehicle according to the control strategy of selection
Electric control.
2. the control method of hybrid vehicle as described in claim 1, which is characterized in that the battery capacity maintains strategy
It specifically includes:
Judge whether engine can individually meet vehicle driving and require；
It is required if it is determined that the engine can individually meet vehicle driving, then controls motor stopping output and power battery stops
Only discharge；
It is required if it is determined that the engine can not individually meet vehicle driving, then controls the motor and participate in output, go forward side by side
One step judges whether the difference between the current SOC value and the SOC target point belongs in preset range；
If the difference between the current SOC value and the SOC target point belongs in the preset range, the electricity is controlled
Machine energy feedback recycles electricity；
If the difference between the current SOC value and the SOC target point is not belonging in the preset range, judging
When stating SOC target point greater than the current SOC value, controls the hybrid vehicle and enter the corresponding driving power generation plan
Slightly, it or when judging that the SOC target point is less than the current SOC value, controls the hybrid vehicle and enters accordingly
The active discharge strategy.
3. the control method of hybrid vehicle as described in claim 1, which is characterized in that the setting of the SOC target point
Range is within the preset range put centered on presetting SOC target point.
4. the control method of hybrid vehicle as described in claim 1, which is characterized in that the driving power generation strategies are specific
Include:
Judge whether engine can individually meet vehicle driving and require；
It is required if it is determined that the engine can not individually meet vehicle driving, then controls motor and participate in output；
It is required if it is determined that the engine can individually meet vehicle driving, then controls the motor and stop output and power electric
Pond stops electric discharge, and further judges whether the output torque of the engine is less than preset value；
If it is determined that the output torque of the engine is less than the preset value, then the SOC target point and described current is obtained
Difference between SOC value；And
Generated output is determined according to the difference, and the output of the engine is controlled so that motor is sent out according to the generated output
Electricity.
5. the control method of hybrid vehicle as claimed in claim 4, which is characterized in that described to be determined according to the difference
Generated output, and the output of the engine is controlled so that electric power generation is specifically included according to the generated output:
When the difference is greater than or equal to first threshold, determine that the generated output is the first performance number, and with described first
Performance number controls the torque of engine so that electric power generation, so that current SOC value is equal to the SOC target point；
When the difference is less than the first threshold and is greater than or equal to second threshold, determine that the generated output is the second function
Rate value, and the torque of the engine is controlled so that electric power generation with second performance number so that current SOC value be equal to it is described
SOC target point, wherein first performance number is greater than second performance number；
When the difference is less than the second threshold and is greater than or equal to third threshold value, determine that the generated output is third function
Rate value, and the torque of the engine is controlled so that electric power generation with the third performance number so that current SOC value be equal to it is described
SOC target point, wherein second performance number is greater than the third performance number；
When the difference is equal to four threshold values, determine that the generated output is the 4th performance number, and with the 4th performance number
The torque of the engine is controlled so that electric power generation charges, so that current SOC value is equal to the SOC target point, wherein described
Third threshold value is greater than the 4th threshold value, and the third performance number is greater than the 4th performance number；
And the first threshold, the second threshold, the third threshold value and the 4th threshold value are successively successively decreased.
6. a kind of control device of hybrid vehicle characterized by comprising control module and electric machine controller, wherein
The control module is sent for receiving SOC target point set by user, and by the SOC target point set by user
To electric machine controller；
The electric machine controller, for obtaining the current SOC value of power battery, and according to the SOC target point set by user
Corresponding control strategy is selected with the current SOC value, and in the case where meeting vehicle and driving required power, according to selection
Control strategy carries out charge and discharge control to the hybrid vehicle；
Wherein, the electric machine controller is specifically used for:
When the SOC target point is less than the current SOC value, active discharge strategy is selected；Wherein, the active discharge strategy
It specifically includes: judging the current operating status of motor；When the motor is currently at halted state, controls the motor and open
It is dynamic, and the motor work is controlled with output torque, so that current SOC value is equal to the SOC target point with default rated power；
When the motor is currently at operating status, judge whether motor meets motor driven demand, if it is, directly with described
Default rated power controls the motor work with output torque, so that current SOC value is equal to the SOC target point；
When the SOC target point is equal to the current SOC value, battery capacity is selected to maintain strategy；
When the SOC target point is greater than the current SOC value, selection driving power generation strategies.
7. the control device of hybrid vehicle as claimed in claim 6, which is characterized in that the setting of the SOC target point
Range is within the preset range put centered on presetting SOC target point.
8. the control device of hybrid vehicle as claimed in claim 6, which is characterized in that the motor control implement body is used
In:
Judge whether engine can individually meet vehicle driving and require；
It is required if it is determined that the engine can not individually meet vehicle driving, then controls motor and participate in output；
It is required if it is determined that the engine can individually meet vehicle driving, then controls the motor and stop output and power electric
Pond stops electric discharge, and further judges whether the output torque of the engine is less than preset value；
If it is determined that the output torque of the engine is less than the preset value, then the SOC target point and described current is obtained
Difference between SOC value；And
Generated output is determined according to the difference, and the output of the engine is controlled so that motor is sent out according to the generated output
Electricity.
9. the control device of hybrid vehicle as claimed in claim 8, which is characterized in that the motor control implement body is used
In:
When the difference is greater than or equal to first threshold, determine that the generated output is the first performance number, and according to described the
The output of one performance number control engine；
When the difference is less than the first threshold and is greater than or equal to second threshold, determine that the generated output is the second function
Rate value, and control according to second performance number output of the engine, wherein first performance number is greater than described second
Performance number；
When the difference is less than the second threshold and is greater than or equal to third threshold value, determine that the generated output is third function
Rate value, and control according to the third performance number output of the engine, wherein second performance number is greater than the third
Performance number；
When the difference is equal to four threshold values, determine that the generated output is the 4th performance number, wherein the third threshold value is big
In the 4th threshold value, and the output of the engine is controlled according to the 4th performance number, the third performance number is greater than institute
State the 4th performance number；
And the first threshold, the second threshold, the third threshold value and the 4th threshold value are successively successively decreased.
10. a kind of hybrid vehicle characterized by comprising the hybrid power as described in any one of claim 6 to 9
The control device of automobile.
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| CN107482269B (en) * | 2017-07-31 | 2020-01-14 | 北京新能源汽车股份有限公司 | Discharging control method and device of power battery, controller and automobile |
| CN109572675B (en) * | 2017-09-29 | 2020-07-10 | 比亚迪股份有限公司 | Hybrid electric vehicle and power generation control method and device thereof |
| CN109353329A (en) * | 2018-09-28 | 2019-02-19 | 潍柴动力股份有限公司 | A kind of control method and device of hybrid vehicle |
| CN111532174A (en) * | 2019-08-27 | 2020-08-14 | 长城汽车股份有限公司 | Charge-discharge control method and device for high-voltage battery |
| CN111114530B (en) * | 2019-12-03 | 2021-04-06 | 一汽解放汽车有限公司 | Energy management method and device for extended range vehicle, controller and storage medium |
| CN114103921B (en) * | 2020-08-27 | 2023-12-12 | 比亚迪股份有限公司 | Vehicle protection control method, device and readable storage medium |
| CN115195476B (en) * | 2022-09-15 | 2023-01-13 | 盛瑞传动股份有限公司 | Vehicle energy management method, device, equipment, readable storage medium and vehicle |
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| CN103978974A (en) * | 2013-02-08 | 2014-08-13 | 高效动力传动系统公司 | System and method for implementing dynamic work mode and control strategy used by hybrid car |
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