CN104494595B - The Poewr control method and device of hybrid vehicle, dynamical system - Google Patents
The Poewr control method and device of hybrid vehicle, dynamical system Download PDFInfo
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- CN104494595B CN104494595B CN201410764141.0A CN201410764141A CN104494595B CN 104494595 B CN104494595 B CN 104494595B CN 201410764141 A CN201410764141 A CN 201410764141A CN 104494595 B CN104494595 B CN 104494595B
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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
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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
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/085—Power
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- 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
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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
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0677—Engine power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/086—Power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
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Abstract
The present invention provides a kind of Poewr control method of hybrid vehicle and device, dynamical systems, wherein the method includes：Obtain the present output power of the current charge power of power battery and target charge power and auxiliary power unit in vehicle；It determines the difference of the target charge power and the current charge power, and determines the demand power of the auxiliary power unit according to the sum of the difference and the present output power；The auxiliary power unit is controlled according to the demand power output power.Using technical solution provided by the invention, it can solve in the related technology, demand power existing for the power control scheme of hybrid vehicle calculates the problems such as complicated, error is larger and influences the performance of power battery, to simplify the calculating process of APU demand powers, the accuracy of APU demand powers is improved, while also improving the real-time of demand power calculating.
Description
Technical field
The present invention relates to the power control fields of hybrid vehicle, in particular to a kind of hybrid vehicle
Poewr control method and device, dynamical system.
Background technology
Currently, the application of hybrid vehicle is more and more extensive, such as since sanitation cart works on urban road, stroke
Route is relatively more fixed, and the activity duration is regular, therefore is very suitable for the popularization and application of new energy technology.Electric sanitation truck refers specifically to
It is equipped with the electric sanitation truck of auxiliary power unit ((Auxiliary power unit, referred to as APU)), as tandem mixing is dynamic
Power sanitation cart, extended-range electric sanitation truck etc..
APU systems by engine, engine electronic control unit (Electronic Control Unit, referred to as
ECU), the compositions such as generator, engine controller and APU controllers, are assemblied on electric vehicle.In vehicle operation, by
APU controllers are that pure electric automobile or tandem mix according to current demand power control engine drawing generator power generation
Power vehicle provides additional auxiliary power, to extend mileage travelled.The demand power computational methods of APU are that APU realizes auxiliary
One of key technology of power function.
The general calculating of electric vehicle APU demand powers and implementation method are as follows：When APU power units start, APU's is defeated
The calculating for going out power usually may require that the loss for considering two broad aspects, and first aspect is the need of the charge/discharge of power battery unit
Power is sought, is on the other hand the demand of vehicle basic function.Specifically 3 parts of demand power point are calculated separately, first
It is divided into driving motor demand power, can calculates to obtain according to signal values such as current gas pedal outputs, be mainly used for meeting vehicle
Driving traveling；Second part is power (such as power-assisted steering pump, brake boost pump, the electric air-conditioning of vehicle attachment consumption
Deng), it is general by the way of estimation；Part III be power battery demand power, by energy management strategies according to SOC value,
The parameters such as bus voltage value are discharged to judge power battery charge still, while providing specific charging and discharging currents value
Calculation basis as demand power (when power battery needs to be operated in discharge condition, which is negative value).
Then the demand power of this three parts is added by APU controllers, finally obtains the current demand power of system, then with
The control instruction value (such as generator torque value, engine speed value) of engine and generator is calculated in this, final to control
APU system output corresponding demand power is to meet vehicle demand.
But the control program of above-mentioned power has the following problems：
(1) APU controllers need to calculate separately the demand power of each subelement, and the variation of When subunits demand power is very fast
When, dynamic stability and real-time are difficult to ensure；(2) staking-out work is complicated, and the power demand of driving motor is needed from oil
The output valves of the door equipment such as pedal calculates, also to combine current gear and motor speed, it is therefore desirable to a large amount of half-mark
After fixed work, the demand power of motor could be accurately calculated；(3) apply the error on electric sanitation truck larger, with electricity
For dynamic cleaning vehicle, vehicle attachment includes not only the general attachment of traditional electric vehicle, further include on pretend the attachment of industry part,
Such as sprinkle water pump, sweep disk-drive motor, this portion requirements power is difficult to estimate because working condition complexity is not only difficult to detect
Meter, the accuracy that this demand power that will certainly just influence vehicle calculates；(4) when demand power calculates inaccuracy, it is possible to
Power battery charging and discharging currents are caused to exceed normal range (NR), to influence battery performance.
For the above problem in the related technology, the scheme of efficiently solving there is no at present.
Invention content
The present invention provides a kind of Poewr control method and device, dynamical system of hybrid vehicle, to solve related skill
Demand power calculating existing for the power control scheme of hybrid vehicle is complicated in art, error is larger and influences power battery
Performance the problems such as.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of power control of hybrid vehicle
Method processed, the method includes：The current charge power of power battery and target charge power in vehicle are obtained, and auxiliary is moved
The present output power of power unit；Determine the difference of the target charge power and the current charge power, and according to described
The sum of difference and the present output power determine the demand power of the auxiliary power unit；Control the auxiliary power unit
According to the demand power output power.
Preferably, the target charge power is obtained by following one mode：Obtain working as the auxiliary power unit
Preceding energy management strategies；The mesh corresponding with the present energy management strategy is determined according to the present energy management strategy
Mark charge power；The target charge power is obtained from preset configuration data.
Preferably, obtaining the present energy management strategy includes：Determine the work at present mould of the auxiliary power unit
Formula；The current operation mode includes following one：Parking charge mode and driving Power following, wherein the parking is filled
Power mode refers to being charged with the first electric current for presetting size to the power battery in the case where the vehicle is in dead ship condition
So that the residual capacity of the battery reaches first object value；The driving Power following refers to the traveling in the vehicle
In the process, power is provided for the vehicle, wherein when the residual capacity of the power battery is less than first threshold, to described dynamic
Power battery carries out charging so that the power battery is in charged state, and is carried for the vehicle to preset the second electric current of size
For power；When the residual capacity reaches the second desired value, keep the residual capacity of the power battery in second mesh
Scale value simultaneously provides power for the vehicle, and the first object value is less than second desired value；According to the present energy pipe
Reason strategy determines that the target charge power corresponding with the present energy management strategy includes：It is dynamic according to identified auxiliary
Power unit current operation mode determines the preset charged electric current with the power battery corresponding to the current operation mode
Value；Determine that the target charges according to the busbar voltage of DC bus where the preset charged current value and the power battery
Power, wherein on the DC bus and be connected to the electrical equipment of the vehicle.
Preferably, the current charge power is determined in the following manner：Obtain the current charging electricity of the power battery
Flow valuve；It is determined and described is currently filled according to the busbar voltage of DC bus where the present charging current value and the power battery
Electrical power, wherein on the DC bus and be connected to the electrical equipment of the vehicle.
According to another aspect of the present invention, a kind of power control device of hybrid vehicle is provided, including：It obtains
Module, for obtaining working as the current charge power of power battery and target charge power in vehicle and auxiliary power unit
Preceding output power；Determining module, the difference for determining the target charge power and the current charge power, and according to institute
State the demand power that the sum of difference and the present output power determine the auxiliary power unit；Control module, for controlling
The auxiliary power unit is according to the demand power output power.
Preferably, the acquisition module, including：First acquisition unit, for obtaining the current of the auxiliary power unit
Energy management strategies；Determination unit, for being determined and the present energy management strategy according to the present energy management strategy
The corresponding target charge power；Alternatively, second acquisition unit, for obtaining the target charging from preset configuration data
Power.
Preferably, the first acquisition unit, for obtaining the present energy management strategy in the following manner：It determines
The current operation mode of the auxiliary power unit；The operating mode includes following one：Parking charge mode and driving power
Follow the mode, wherein the parking charge mode refers in the case where the vehicle is in dead ship condition, to the power battery with pre-
If the first electric current of size is charged so that the residual capacity of the battery reaches first object value；The driving power follows
Pattern refers to providing power in the driving process of the vehicle for the vehicle, wherein is held in the residue of the power battery
When amount is less than first threshold, charging is carried out so that at the power battery to preset the second electric current of size to the power battery
Power is provided in charged state, and for the vehicle；When the residual capacity reaches the second desired value, the power electric is kept
The residual capacity in pond provides power in second desired value and for the vehicle, and the first object value is less than second mesh
Scale value；The determination unit determines and the current work for the current operation mode according to identified auxiliary power unit
The preset charged current value of the power battery corresponding to operation mode；And it is moved with described according to the preset charged current value
The busbar voltage of DC bus determines the target charge power where power battery, wherein on the DC bus and is connected to institute
State the electrical equipment of vehicle.
Preferably, the acquisition module further includes：Third acquiring unit is filled for obtaining the current of the power battery
Electric current value；And institute is determined according to the busbar voltage of DC bus where the present charging current value and the power battery
State current charge power, wherein on the DC bus and be connected to the electrical equipment of the vehicle.
According to another aspect of the present invention, a kind of dynamical system of hybrid vehicle is provided, including：Full-vehicle control
Device, auxiliary power unit, electrokinetic cell system, driving motor system, vehicle flow attachment；Wherein, the auxiliary power unit,
The electrokinetic cell system, the driving motor system, the vehicle flow attachment are connected to the entire car controller；It is described auxiliary
Help power unit, the electrokinetic cell system, the driving motor system and the vehicle flow attachment with the vehicle control
Device processed is connected by signal wire；Also, the auxiliary power unit, the electrokinetic cell system, the driving motor system and
The vehicle flow attachment is connected to same DC bus；The entire car controller, for obtaining the current of the power battery
The present output power of charge power and target charge power and the auxiliary power unit；Determine the target charging work(
The difference of rate and the current charge power, and determine that the auxiliary is dynamic according to the sum of the difference and the present output power
The demand power of power unit；And the control auxiliary power unit is according to the demand power output power.
Preferably, the auxiliary power unit includes：Generator and engine controller, engine and electronic control are single
Member.
Using technical solution provided by the invention, due to that can utilize the target charge power of power battery in vehicle and work as
The difference of preceding charge power, the demand power with the determining APU of the sum of the output power of APU, and carry out work(according to the demand power
Rate output, it therefore, can solve in the related technology, demand power existing for the power control scheme of hybrid vehicle calculates
The problems such as complexity, error are larger and influence the performance of power battery, to simplify the calculating process of APU demand powers, carries
The high accuracy of APU demand powers, while also improving the real-time of demand power calculating.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart according to the Poewr control method of the hybrid vehicle of the embodiment of the present invention；
Fig. 2 is the power system architecture schematic diagram according to the electric sanitation truck of the preferred embodiment of the present invention；
Fig. 3 is the structure diagram according to the power control device of the hybrid vehicle of the embodiment of the present invention；
Fig. 4 is another structure diagram according to the power control device of the hybrid vehicle of the embodiment of the present invention.
Specific implementation mode
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application can be combined with each other.
Complicated for APU demand powers calculating process present in the relevant technologies, error is larger, and accuracy is not high, influences
The technical problems such as the performance of power battery, the embodiment of the present invention using power battery as calculate APU demand powers break-through point, with
The target charge power and current charge-discharge electric power of power battery realize the calculating of APU demand powers as foundation；For mixed
The characteristics of power car (such as electric sanitation truck) vehicle attachment is more and operating mode is complicated, and demand power is difficult to estimate is closed, it will be straight
Driving motor and other vehicle attachmentes on stream busbar are integrally handled as a power demand.Concrete scheme is said in detailed below
It is bright.
Fig. 1 is the flow chart according to the Poewr control method of the hybrid vehicle of the embodiment of the present invention.As shown in Figure 1,
This method includes following processing step：
Step S102 obtains the current of current charge power and the target charge power of power battery in vehicle and APU
Output power；
Step S104 determines the difference of above-mentioned target charge power and above-mentioned current charge power, and according to above-mentioned difference
With the demand power of the determining above-mentioned APU of the sum of above-mentioned present output power；
Step S106 controls above-mentioned APU according to the demand power output power.
By above-mentioned each processing step, due to the difference of current charge power and target charge power using power battery
Value, and and calculate the sum of the difference and the present output power of APU, obtain the demand power of APU, therefore, it may not be necessary to right
Physical relationship between the demand power and gas pedal value of driving motor is demarcated, therefore avoids complicated staking-out work；
Eliminate to vehicle attachment and on pretend the link that the demand power of industry part estimated, therefore calculating process is more succinct,
And accuracy higher；Become the calculation basis for being turned to demand power, Neng Gouji using the real-time charge-discharge electric power of power battery
When detect actual demand power variation, real-time higher, and due to calculate error it is small, this programme can be good at avoiding moving
Power over-charging of battery is put excessively, to extend battery life.
In step S102, there are many acquisition modes of target charge power, such as following manner acquisition may be used：(1)
Obtain the present energy management strategy of above-mentioned APU；It is determined and above-mentioned present energy management according to above-mentioned present energy management strategy
The corresponding above-mentioned target charge power of strategy；(2) above-mentioned target charge power can also be obtained from preset configuration data.For
(1) plants acquisition modes, can show as following implemented process, but not limited to this：Obtain above-mentioned present energy management strategy institute
Corresponding target charge current value；According to the busbar electricity of DC bus where above-mentioned target charge current value and above-mentioned power battery
Pressure determines above-mentioned current charge power, wherein on above-mentioned DC bus and is connected to the electrical equipment of above-mentioned vehicle.
During being preferably implemented for one of the embodiment of the present invention, above-mentioned present energy management strategy can be shown as
The current operation mode of APU；The current operation mode includes following one：Parking charge mode and driving Power following,
Wherein, parking charge mode refers in the case where above-mentioned vehicle is in dead ship condition, to above-mentioned power battery to preset the first of size
Electric current is charged so that the residual capacity of above-mentioned battery reaches first object value；Power following of driving a vehicle refers in above-mentioned vehicle
Driving process in, power is provided for above-mentioned vehicle, when the residual capacity of above-mentioned power battery is less than first threshold, to dynamic
Power battery carries out charging so that the power battery is in charged state, and is carried for above-mentioned vehicle to preset the second electric current of size
For power；When above-mentioned residual capacity reaches the second desired value, keep the residual capacity of above-mentioned power battery in above-mentioned second mesh
Scale value simultaneously provides power for above-mentioned vehicle, wherein above-mentioned first object value is less than above-mentioned second desired value.
Correspondingly, it can be determined and present energy management strategy according to above-mentioned present energy management strategy in the following way
Corresponding target charge power includes：According to identified APU current operation modes, determine with corresponding to current operation mode
The preset charged current value of power battery；According to the busbar voltage of DC bus where the preset charged current value and power battery
Determine target charge power, wherein on DC bus and be connected to the electrical equipment of vehicle.
For the current charge power of power battery, can determine in the following manner, but not limited to this：It obtains above-mentioned dynamic
The present charging current value of power battery；According to the busbar of DC bus where above-mentioned present charging current value and above-mentioned power battery
Voltage determines above-mentioned current charge power, wherein on above-mentioned DC bus and is connected to the electrical equipment of above-mentioned vehicle.
The control program of above-mentioned APU demand powers in order to better understand, illustrates by taking electric sanitation truck as an example below,
But it is not limited to electric sanitation truck.
Involved electric sanitation truck in the embodiment of the present invention, power system architecture figure is as shown in Fig. 2, include：Vehicle
Controller, auxiliary power unit APU, electrokinetic cell system, driving motor system, vehicle flow attachment；Wherein, APU, power electric
Cell system, driving motor system, vehicle flow attachment are connected to entire car controller；APU, electrokinetic cell system, driving motor system
System and vehicle flow attachment are connect with entire car controller by signal wire；Also, APU, electrokinetic cell system, driving motor system
System and vehicle flow attachment are connected to same DC bus；Entire car controller, the current charging for obtaining above-mentioned power battery
The present output power of power and target charge power and above-mentioned APU；Determine that above-mentioned target charge power is currently filled with above-mentioned
The difference of electrical power, and according to the demand power of the determining above-mentioned APU of the sum of above-mentioned difference and above-mentioned present output power；And control
Above-mentioned APU is made according to the demand power output power.
Using entire car controller as core, pass through its IO or control area net(CAN) (Controller Area Network, abbreviation
For CAN) other subelements of bus communication interface and dynamical system establish and connect, and entire car controller is both responsible for full-vehicle control, energy
The execution of management strategy is measured, while also realizing the correlation function of APU controls as APU controllers.Wherein, other subelements include
Power battery and management system (i.e. electrokinetic cell system), driving motor and controller (i.e. driving motor system), APU (power generations
Machine and controller, engine and ECU), vehicle chassis and on pretend high pressure attachment (i.e. vehicle flow attachment) of industry part etc., this
High-tension apparatus in a little systems is attempted by high voltage dc bus jointly.
When actual condition meets the condition of APU unlatchings, when into APU mode, APU controllers just start periodically to carry out
The calculating of demand power.The calculating thinking of APU demand powers is as follows in the present embodiment：
Power battery is the power source of this dynamical system, and the size of charge-discharge electric power with its common DC bus directly by connecting
The demand power of the other equipment connect determines that the changed power of driving motor or other vehicle attachmentes can be all embodied in real time
On the charge-discharge electric power of power battery, therefore the present embodiment regards driving motor and vehicle attachment as an entirety, does not count individually
The demand power for calculating or estimating its each subelement is with the battery target charging and discharging currents provided in vehicle energy management strategies
Send out point, the demand power values of APU systems is the APU in the present embodiment to meet the target charge/discharge current of power battery as target
The specific calculating process of demand power is as follows：
The first step calculates the current charge power of power battery.The power that APU controllers are provided according to battery management system
The current charging and discharging currents of battery (refer to battery management system detection this branch of direct current bus bar pond charging and discharging currents) and
Bus voltage value calculates current charge power, and current charge power is multiplied by busbar voltage equal to current charging and discharging currents, if
Current power battery is in discharge condition, then charge power is negative value.
Second step calculates the demand power of power battery, i.e. target charge power.By APU controllers with being used according to specific
Energy management strategies come to determine the target charge current of power battery, the energy management strategies that this programme is taken be by APU
Operating mode is divided into parking charge mode and two kinds of Power following of driving：
Parking charge mode needs driver to be opened by APU switch manuals under dead ship condition, if APU controllers at this time
Detect that the SOC value of power battery is less than 90%, then APU systems are with the constant target of 0.3C (C represents the capacity of power battery)
Electric current is to power battery charging, until the SOC of power battery reaches 90%, APU and is stopped, under this pattern, power battery
Target charge current is always fixed value 0.3C.
Power following of driving a vehicle is automatically turned on by APU controllers in vehicle operation, vehicle igniting operation
Afterwards, if power battery SOC value is more than 30%, vehicle is run with electric-only mode first, and APU systems are not turned on, and work as power
When battery SOC is consumed within 30%, APU is opened, into driving Power following, the pattern again it is specific in two stages,
First stage is power battery constant-current charging phase, and APU system output powers are meeting driving traveling and vehicle attachment demand work(
On the basis of rate, also to ensure that power battery is charged with the constant target electric current of 0.3C, until battery SOC electricity reaches 50%,
Enter back into second stage, i.e. power battery electric quantity maintaining stage, at this time APU system output powers only need meet driving traveling and
The demand power of vehicle attachment, and power battery does not charge and does not discharge yet, this pattern is continued until vehicle parking, stops working.
When lighting a fire again after driver is stopped, system can re-start mode decision.It can using this control strategy
The cycle charge-discharge number of power battery is effectively reduced, and can ensure battery and be charged always with rational electric current, so as to
The enough service life for effectively extending battery.
The target charge current of power battery under both patterns is multiplied by current busbar voltage, has just obtained power electric
The demand power in pond.
Third walks, and calculates the current output power values of APU.Engine is operated in rotating speed control mode in this programme, power generation
Machine is operated in torque control model, therefore APU systems only need to read the rotating speed and generator of engine by CAN bus
Then torque utilizes P=T*n/9550 (wherein T is generator torque (Nm), and n is engine speed (rpm)) that can calculate
Current output power value.
4th step calculates the demand power value A of APU.APU demand power values A=P+B-C.Wherein, P indicates that APU is currently defeated
Go out power, B indicates that battery target charge power, C indicate the current charge power of battery.
5th step controls APU power outputs on demand.This programme controlling engine in economical consumption of fuel region as possible
Work is principle, and reduces the rotational speed regulation number of engine to the greatest extent, and specific method is by all possible demand power value
It is divided into several value sections, every section corresponds to different engine speed respectively, then with current APU demand powers and corresponding starts
Machine rotating speed of target calculates the target torque of generator, to finally control APU system output corresponding demand power, is meeting
In the case of driving motor and vehicle other attachment demand electricity consumptions so that according to target charge power works power battery.
Vehicle in the process of moving, when the demand power of vehicle attachment changes because of different working conditions, or
When the output valve of gas pedal changes, the current charge power of power battery can be caused to change, and then lead to APU
Demand power changes, and this programme is the case where need not individually accurately calculate driving motor and vehicle attachment demand power value
Under, it is capable of the calculating of the realization APU demand powers of accurate quick, is very suitable for operating mode complexity and upper dress flow attachment is more
Electric sanitation truck.
The embodiment of the present invention additionally provides a kind of power control device of hybrid vehicle, for realizing the above method,
As shown in figure 3, the device includes following processing module：
Acquisition module 30, for obtaining the current charge power of power battery and target charge power, Yi Jifu in vehicle
The present output power of power-assist power unit AP U；
Determining module 32 is connected to acquisition module 30, for determining above-mentioned target charge power and above-mentioned current charging work(
The difference of rate, and according to the demand power of the determining above-mentioned APU of the sum of above-mentioned difference and above-mentioned present output power；
Control module 34 is connected to determining module 32, for controlling above-mentioned APU according to the demand power output power.
The function of being realized by above-mentioned modules equally can be avoided complicated staking-out work；It eliminates to whole
Vehicle attachment and on pretend the link that the demand power of industry part is estimated, therefore calculating process is more succinct, and accuracy
Higher；Become the calculation basis for being turned to demand power using the real-time charge-discharge electric power of power battery, reality can be detected in time
The variation of demand power, real-time higher, and also it is small due to calculating error, this programme can be good at that power battery is avoided to overcharge
Or cross and put, to extend battery life.
In a preferred embodiment, as shown in figure 4, acquisition module 30 includes following processing unit：First acquisition unit
300, the present energy management strategy for obtaining above-mentioned APU；Determination unit 302, for managing plan according to above-mentioned present energy
Slightly determine above-mentioned target charge power corresponding with above-mentioned present energy management strategy.Wherein, the first acquisition unit 300, also
For obtaining above-mentioned present energy management strategy in the following manner：Determine the current operation mode of above-mentioned APU；The operating mode
Including following one：Parking charge mode, driving Power following, wherein above-mentioned parking charge mode refers in above-mentioned vehicle
Under the dead ship condition, charged to above-mentioned power battery with to preset the first electric current of size so that above-mentioned battery residue
Capacity reaches first object value；Above-mentioned driving Power following refers in the driving process of above-mentioned vehicle, is above-mentioned vehicle
There is provided power, wherein when the residual capacity of above-mentioned power battery is less than first threshold, to power battery to preset the of size
Two electric currents carry out charging so that power battery is in charged state, and provides power for above-mentioned vehicle；It is arrived in above-mentioned residual capacity
When up to the second desired value, the residual capacity of above-mentioned power battery is kept in above-mentioned second desired value and is provided for above-mentioned vehicle dynamic
Power, wherein above-mentioned first object value is less than above-mentioned second desired value.
At this point, determination unit 302, for according to identified APU current operation modes, determining and above-mentioned work at present mould
The preset charged current value of power battery corresponding to formula；And it is female according to direct current where preset charged current value and power battery
The busbar voltage of line determines target charge power, wherein on DC bus and is connected to the electrical equipment of vehicle.
Optionally, acquisition module 30 can also include：Second acquisition unit 304, for being obtained from preset configuration data
Above-mentioned target charge power.
Optionally, acquisition module 30 can also include：Third acquiring unit 306 is filled for obtaining the current of power battery
Electric current value；And it is currently filled according to the busbar voltage determination of the present charging current value and DC bus where power battery
Electrical power, wherein on DC bus and be connected to the electrical equipment of vehicle.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Following manner realization is crossed, but not limited to this：Above-mentioned modules can be located in same processor, can also be located at different places
It manages in device, can also be located in different processors in the form of various combination.Certainly, hardware realization is not limited to above-mentioned
Form, such as following form can also be shown as：
The embodiment of the present invention additionally provides a kind of software, includes the program generation for executing step S102-S106 in Fig. 1
Code；
The embodiments of the present invention also provide a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium can
To store the code of the program for executing step S102-S106.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or
The various media that can store program code such as CD.
It above are only the preferred embodiment of the present invention above, be not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Poewr control method of hybrid vehicle, which is characterized in that the method includes：
Obtain the current output of the current charge power of power battery and target charge power and auxiliary power unit in vehicle
Power；
Determine the difference of the target charge power and the current charge power, and according to the difference and the current output
The sum of power determines the demand power of the auxiliary power unit；
The auxiliary power unit is controlled according to the demand power output power.
2. according to the method described in claim 1, it is characterized in that, the target charge power is obtained by following one mode
It takes：
Obtain the present energy management strategy of the auxiliary power unit；According to the present energy management strategy determine with it is described
The corresponding target charge power of present energy management strategy；
The target charge power is obtained from preset configuration data.
3. according to the method described in claim 2, it is characterized in that, obtaining the present energy management strategy and including：Determine institute
State the current operation mode of auxiliary power unit；The current operation mode includes following one：
Parking charge mode and driving Power following, wherein the parking charge mode refers to being in stop in the vehicle
Under car state, charged with the first electric current for presetting size so that the residual capacity of the battery reaches to the power battery
First object value；
The driving Power following refer to provide power in the driving process of the vehicle for the vehicle, wherein
When the residual capacity of the power battery is less than first threshold, the power battery is filled with the second electric current for presetting size
Electricity is so that the power battery is in charged state, and provides power for the vehicle；The second mesh is reached in the residual capacity
When scale value, the residual capacity of the power battery is kept to provide power in second desired value and for the vehicle, described
One desired value is less than second desired value；
The target charge power corresponding with the present energy management strategy is determined according to the present energy management strategy
Including：According to identified auxiliary power unit current operation mode, determine with it is described corresponding to the current operation mode
The preset charged current value of power battery；According to the mother of DC bus where the preset charged current value and the power battery
Line voltage determines the target charge power, wherein on the DC bus and is connected to the electrical equipment of the vehicle.
4. according to the method described in claim 1, it is characterized in that, determining the current charge power in the following manner：
Obtain the present charging current value of the power battery；
It is determined and described is currently filled according to the busbar voltage of DC bus where the present charging current value and the power battery
Electrical power, wherein on the DC bus and be connected to the electrical equipment of the vehicle.
5. a kind of power control device of hybrid vehicle, which is characterized in that including：
Acquisition module, for obtaining the current charge power of power battery and target charge power and auxiliary power in vehicle
The present output power of unit；
Determining module, the difference for determining the target charge power and the current charge power, and according to the difference
With the demand power of the determining auxiliary power unit of the sum of the present output power；
Control module, for controlling the auxiliary power unit according to the demand power output power.
6. device according to claim 5, which is characterized in that
The acquisition module, including：First acquisition unit, the present energy for obtaining the auxiliary power unit manage plan
Slightly；Determination unit, it is corresponding with the present energy management strategy described for being determined according to the present energy management strategy
Target charge power；Alternatively,
The acquisition module, including：Second acquisition unit, for obtaining the target charge power from preset configuration data.
7. device according to claim 6, which is characterized in that
The first acquisition unit, for obtaining the present energy management strategy in the following manner：Determine that the auxiliary is dynamic
The current operation mode of power unit；The operating mode includes following one：Parking charge mode and driving Power following,
In, the parking charge mode refers in the case where the vehicle is in dead ship condition, to the power battery to preset the of size
One electric current is charged so that the residual capacity of the battery reaches first object value；The driving Power following refer to
In the driving process of the vehicle, power is provided for the vehicle, wherein be less than first in the residual capacity of the power battery
When threshold value, charging is carried out so that the power battery is in charging shape to preset the second electric current of size to the power battery
State, and provide power for the vehicle；When the residual capacity reaches the second desired value, the residue of the power battery is kept
Capacity provides power in second desired value and for the vehicle, and the first object value is less than second desired value；
The determination unit determines and the current work for the current operation mode according to identified auxiliary power unit
The preset charged current value of the power battery corresponding to operation mode；And it is moved with described according to the preset charged current value
The busbar voltage of DC bus determines the target charge power where power battery, wherein on the DC bus and is connected to institute
State the electrical equipment of vehicle.
8. device according to claim 6, which is characterized in that the acquisition module further includes：Third acquiring unit is used
In the present charging current value for obtaining the power battery；And according to the present charging current value and the power battery institute
The current charge power is determined in the busbar voltage of DC bus, wherein on the DC bus and is connected to the vehicle
Electrical equipment.
9. a kind of dynamical system of hybrid vehicle, which is characterized in that including：Entire car controller, auxiliary power unit, power
Battery system, driving motor system, vehicle flow attachment；
Wherein, the auxiliary power unit, the electrokinetic cell system, the driving motor system, the vehicle flow attachment
It is connected to the entire car controller；The auxiliary power unit, the electrokinetic cell system, the driving motor system and described
Vehicle flow attachment is connect with the entire car controller by signal wire；Also, the auxiliary power unit, the power electric
Cell system, the driving motor system and the vehicle flow attachment are connected to same DC bus；
The entire car controller, for obtaining the current charge power of the power battery and target charge power and described
The present output power of auxiliary power unit；Determine the difference of the target charge power and the current charge power, and root
The demand power of the auxiliary power unit is determined according to the sum of the difference and the present output power；And control is described auxiliary
Help power unit according to the demand power output power.
10. system according to claim 9, which is characterized in that the auxiliary power unit includes：Generator and generator
Controller, engine and electronic control unit.
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| CN107264519B (en) * | 2016-04-06 | 2019-05-28 | 上海汽车集团股份有限公司 | To the method and apparatus of the battery pack heating of hybrid vehicle |
| CN106100477B (en) * | 2016-07-14 | 2019-04-05 | 广州汽车集团股份有限公司 | Automobile current generator control method and device |
| CN107972498A (en) * | 2016-10-21 | 2018-05-01 | 蔚来汽车有限公司 | Power distribution method and system for electric vehicle |
| CN107487186B (en) * | 2016-12-23 | 2019-09-20 | 宝沃汽车（中国）有限公司 | Protection control method, device and vehicle for vehicle |
| US10227067B2 (en) * | 2017-03-30 | 2019-03-12 | Ford Global Technologies, Llc | HEV battery management for generating off-board power |
| CN109795473A (en) * | 2017-11-16 | 2019-05-24 | 郑州宇通客车股份有限公司 | Hybrid vehicle and battery capacity balance control method and control system |
| CN112339739B (en) * | 2019-08-06 | 2022-08-09 | 比亚迪股份有限公司 | Power generation control method and control device for whole vehicle, vehicle and electronic equipment |
| CN112455248B (en) * | 2019-09-06 | 2022-07-15 | 北京车和家信息技术有限公司 | Control method and device of range extender |
| CN111169458A (en) * | 2019-10-10 | 2020-05-19 | 中国第一汽车股份有限公司 | Power distribution method, device and system for hybrid electric vehicle |
| CN113696883A (en) * | 2020-05-21 | 2021-11-26 | 广州汽车集团股份有限公司 | Method and device for controlling engine power of hybrid vehicle and storage medium |
| CN113459895B (en) * | 2021-06-28 | 2022-07-08 | 三一汽车起重机械有限公司 | Energy control method and device for working machine, and electronic device |
| CN113734144B (en) * | 2021-08-26 | 2023-06-13 | 华人运通(江苏)技术有限公司 | Mode control method, device and system for power system of vehicle and vehicle |
| CN114194070A (en) * | 2021-12-28 | 2022-03-18 | 三一汽车起重机械有限公司 | Energy management method and device of power system and engineering machinery |
| CN114179637A (en) * | 2021-12-30 | 2022-03-15 | 中联重科股份有限公司 | Vehicle self-adaptive energy management method, system and storage medium |
| CN114274944B (en) * | 2022-01-11 | 2023-05-26 | 中国第一汽车股份有限公司 | Dual-motor vehicle control method and device |
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| JP4345824B2 (en) * | 2007-02-21 | 2009-10-14 | トヨタ自動車株式会社 | Vehicle and control method thereof |
| WO2010052766A1 (en) * | 2008-11-05 | 2010-05-14 | トヨタ自動車株式会社 | Hybrid vehicle and hybrid vehicle control method |
| CN117048579A (en) * | 2011-01-13 | 2023-11-14 | 卡明斯公司 | Systems, methods, and apparatus for controlling power output distribution in a hybrid powertrain |
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