CN108656931A - Hybrid vehicle and its dynamical system and electricity-generating control method - Google Patents
Hybrid vehicle and its dynamical system and electricity-generating control method Download PDFInfo
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- CN108656931A CN108656931A CN201710211011.8A CN201710211011A CN108656931A CN 108656931 A CN108656931 A CN 108656931A CN 201710211011 A CN201710211011 A CN 201710211011A CN 108656931 A CN108656931 A CN 108656931A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of hybrid vehicle and its dynamical system and electricity-generating control method, dynamical system includes：Engine, engine output power to the first wheel of hybrid vehicle by clutch；Power motor, power motor are used to output driving force to the second wheel of hybrid vehicle；To the power battery of power motor power supply；DC DC converters；The low tension battery being connected with DC DC converters；The auxiliary-motor being connected with engine, auxiliary-motor are connected with power motor, DC DC converters and power battery respectively, and auxiliary-motor generates electricity under the drive of engine；Control module, for entering generated output shaping modes according to the SOC value of power battery and the speed control auxiliary-motor of hybrid vehicle, so that engine operates in preset optimal economic region, wherein after auxiliary-motor enters generated output shaping modes, it is additionally operable to that the generated output of auxiliary-motor is adjusted according to the SOC value of low tension battery, so as to maintain vehicle low speed electric equilibrium and low speed ride comfort.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of dynamical system of hybrid vehicle, a kind of mixing are dynamic
Power automobile, a kind of electricity-generating control method of hybrid vehicle and a kind of computer readable storage medium.
Background technology
With the continuous consumption of the energy, the development and utilization of new energy vehicle has been increasingly becoming a kind of trend.Hybrid power
Automobile is driven as one kind in new energy vehicle by engine and/or motor.
But in the related art, the dynamotor of hybrid vehicle acts also as while serving as driving motor
Generator, so when causing to run at a low speed dynamotor rotating speed it is relatively low, also result in dynamotor generated output and
Generating efficiency is also very low, and to cannot be satisfied the power demand run at a low speed, vehicle maintains low speed electric equilibrium relatively difficult.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
First purpose be to propose a kind of dynamical system of hybrid vehicle, is able to maintain that vehicle low speed electric equilibrium and low speed smooth-going
Property.
Second object of the present invention is to propose a kind of hybrid vehicle.Third object of the present invention is to propose
A kind of electricity-generating control method of hybrid vehicle.Fourth object of the present invention is to propose a kind of computer-readable storage medium
Matter.
In order to achieve the above objectives, a kind of dynamical system for hybrid vehicle that first aspect present invention embodiment proposes,
Including：Engine, the engine output power to the first wheel of the hybrid vehicle by clutch；Power electric
Machine, the power motor are used to output driving force to the second wheel of the hybrid vehicle；Power battery, the power electric
Pond is used to power to the power motor；DC-DC converter；Low tension battery, the low tension battery are converted with the DC-DC
Device is connected；The auxiliary-motor being connected with the engine, the auxiliary-motor respectively with the power motor, the DC-DC converter
It is connected with power battery, the auxiliary-motor generates electricity under the drive of the engine；Control module, the control module are used
In the SOC value, the speed of the SOC value and the hybrid vehicle of the low tension battery that obtain the power battery, and root
The auxiliary-motor, which is controlled, according to the SOC value of the power battery and the speed of the hybrid vehicle enters generated output adjusting mould
Formula, so that the engine operates in preset optimal economic region, wherein adjust mould when the auxiliary-motor enters generated output
After formula, the control module is additionally operable to adjust the generated output of the auxiliary-motor according to the SOC value of the low tension battery
Section.
The dynamical system of the hybrid vehicle proposed according to embodiments of the present invention, engine are defeated by power by clutch
Go out the first wheel to hybrid vehicle, power motor outputs driving force to the second wheel of hybrid vehicle, power electric
Pond powers to power motor, to realize to power battery charging, to power when auxiliary-motor is generated electricity under the drive of engine
Motor is powered, at least one of DC-DC converter power supply, and control module obtains the SOC value of power battery, low tension battery
SOC value and hybrid vehicle speed, and according to the SOC value of power battery and the secondary electricity of the speed of hybrid vehicle control
Machine enters generated output shaping modes, so that engine operates in preset optimal economic region, when auxiliary-motor enters power generation work(
After rate shaping modes, control module is adjusted the generated output of auxiliary-motor also according to the SOC value of low tension battery, so as to
Vehicle low speed electric equilibrium and low speed ride comfort are enough maintained, vehicle performance is promoted.
In order to achieve the above objectives, a kind of hybrid vehicle that second aspect of the present invention embodiment proposes, including it is described
The dynamical system of hybrid vehicle.
The hybrid vehicle proposed according to embodiments of the present invention is able to maintain that vehicle low speed electric equilibrium and low speed smooth-going
Property, promote vehicle performance.
In order to achieve the above objectives, a kind of Generation Control side for hybrid vehicle that third aspect present invention embodiment proposes
Method, the dynamical system of the hybrid vehicle include engine, power motor, power battery, DC-DC converter, with it is described
Engine connected auxiliary-motor, the low tension battery that is connected with the DC-DC converter, the engine will be moved by clutch
Power is output to the first wheel of the hybrid vehicle, and the power motor is for outputting driving force to the hybrid power vapour
Second wheel of vehicle, the power battery for give the power motor power supply, the auxiliary-motor respectively with the power motor,
The DC-DC converter is connected with power battery, and the auxiliary-motor generates electricity under the drive of the engine, the power generation
Control method includes the following steps：Obtain the SOC value of the power battery and the speed of the hybrid vehicle, the low pressure
The SOC value of accumulator；According to the SOC value of the power battery and the speed of the hybrid vehicle control the auxiliary-motor into
Enter generated output shaping modes, so that the engine operates in preset optimal economic region；When the auxiliary-motor enters hair
After electrical power shaping modes, the generated output of the auxiliary-motor is adjusted according to the SOC value of the low tension battery.
The electricity-generating control method of the hybrid vehicle proposed according to embodiments of the present invention, obtain power battery SOC value,
The SOC value of low tension battery and the speed of hybrid vehicle, and according to the vehicle of the SOC value of power battery and hybrid vehicle
Speed control auxiliary-motor enters generated output shaping modes, so that engine operates in preset optimal economic region, works as auxiliary-motor
Into after generated output shaping modes, the generated output of auxiliary-motor is adjusted also according to the SOC value of low tension battery, to
It is able to maintain that vehicle low speed electric equilibrium and low speed ride comfort, promotes vehicle performance.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of computer readable storage medium, has
It is stored in instruction therein, when executed, the hybrid vehicle executes any one of them Generation Control
Method.
Description of the drawings
Fig. 1 is the block diagram of the dynamical system of hybrid vehicle according to the ... of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the dynamical system of hybrid vehicle in accordance with another embodiment of the present invention；
Fig. 3 is the block diagram of the dynamical system of hybrid vehicle according to an embodiment of the invention；
Fig. 4 is the block diagram of the dynamical system of hybrid vehicle in accordance with another embodiment of the present invention；
Fig. 5 is the curve synoptic diagram of Engine Universal Characteristics according to an embodiment of the invention；
Fig. 6 is the block diagram of hybrid vehicle according to the ... of the embodiment of the present invention；
Fig. 7 is the flow chart of the electricity-generating control method of hybrid vehicle according to the ... of the embodiment of the present invention；And
Fig. 8 is the flow chart of the electricity-generating control method of hybrid vehicle according to an embodiment of the invention.
Specific implementation mode
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 for explaining the present invention, and is not considered as limiting the invention.
The dynamical system that the hybrid vehicle of one aspect of the present invention embodiment proposition is described below with reference to Fig. 1-3, should
Dynamical system provides sufficient power and electric energy for hybrid vehicle normally travel.
Fig. 1 is the block diagram of the dynamical system of hybrid vehicle according to the ... of the embodiment of the present invention.As shown in Figure 1,
The dynamical system of the hybrid vehicle includes：Engine 1, power motor 2, power battery 3, DC-DC converter 4 and auxiliary-motor
5。
In conjunction with shown in Fig. 1 to Fig. 3, engine 1 outputs power to the wheel 7 of hybrid vehicle by clutch 6；It is dynamic
Force motor 2 is used to output driving force to the wheel 7 of hybrid vehicle.That is, the dynamical system of the embodiment of the present invention can
By engine 1 and/or power motor 2 power is provided for hybrid vehicle normally travel.In some embodiments of the present invention
In, the power source of dynamical system can be engine 1 and power motor 2, that is to say, that appointing in engine 1 and power motor 2
One can individually export power to wheel 7, alternatively, engine 1 and power motor 2 can export power to wheel 7 simultaneously.
Power battery 3 is used to power to power motor 2；Auxiliary-motor 5 is connected with engine 1, for example, auxiliary-motor 5 can pass through
The train end of engine 1 is connected with engine 1.Auxiliary-motor 5 respectively with 3 phase of power motor 2, DC-DC converter 4 and power battery
Even, when auxiliary-motor 5 is generated electricity under the drive of engine 1 with realize charging to power battery 3, to power motor 2 power supply, to
At least one of power supply of DC-DC converter 4.In other words, engine 1 can drive auxiliary-motor 5 to generate electricity, the electricity that auxiliary-motor 5 generates
It can be provided at least one of power battery 3, power motor 2 and DC-DC converter 4.It should be understood that engine 1
Auxiliary-motor 5 can be driven to generate electricity while exporting power to wheel 7, also individually auxiliary-motor 5 can driven to generate electricity.
Correspondence serves as driving motor and generator respectively for power motor 2 and auxiliary-motor 5 as a result, auxiliary-motor 5 when due to low speed
With higher generated output and generating efficiency, so as to meet the power demand run at a low speed, vehicle low speed can be maintained
Electric equilibrium maintains vehicle low speed ride comfort, promotes the power performance of vehicle.
In some embodiments, auxiliary-motor 5 can be BSG (Belt-driven Starter Generator, belt transmission
Startup/generating integrated motor) motor.It should be noted that auxiliary-motor 5 belongs to high-voltage motor, such as the power generation electricity of auxiliary-motor 5
Pressure is suitable with the voltage of power battery 3, to which the electric energy that auxiliary-motor 5 generates can be without voltage transformation directly to power battery
3 chargings can also power directly to power motor 2 and/or DC-DC converter 4.And auxiliary-motor 5 also belongs to high efficiency generator, example
Drive the power generation of auxiliary-motor 5 that 97% or more generating efficiency can be realized such as under 1 idling speed of engine.
In addition, in some embodiments of the invention, auxiliary-motor 5 can be used for starting engine 1, i.e. auxiliary-motor 5 can have
Realize the function of starting engine 1, such as when starting engine 1, auxiliary-motor 5 can drive the crank rotation of engine 1, so that
The piston of engine 1 reaches ignition location, and to realize the startup of engine 1, thus auxiliary-motor 5 can be realized opens in the related technology
The function of motivation.
As described above, engine 1 and power motor 2 are used equally for the wheel 7 of driving hybrid vehicle.For example, such as Fig. 2
Shown, engine 1 can drive for example a pair of of front-wheel 71 (including the near front wheel and off-front wheel) of the first wheel of hybrid vehicle, move
Force motor 2 can driving force to hybrid vehicle the second wheel such as a pair of rear wheels 72 (including left rear wheel and off hind wheel).It changes
Yan Zhi, when engine 1 drives a pair of of front-wheel 71 and power motor 2 drives a pair of rear wheels 72, the driving force difference of dynamical system
To a pair of of front-wheel 71 and a pair of rear wheels 72, the type of drive of 4 wheel driven can be used in vehicle for output.
Further, when engine 1 drives the first wheel and power motor 2 drives the second wheel, in conjunction with shown in Fig. 2,
The dynamical system of hybrid vehicle further includes the first speed changer 91 and the second speed changer 92, wherein engine 1 passes through clutch
6 and first speed changer 91 output power to for example a pair of of front-wheel 71 of the first wheel of hybrid vehicle, power motor 2 passes through
Second speed changer 92 outputs driving force to the second wheel such as a pair of rear wheels 72 of hybrid vehicle.Wherein, clutch 6 and
One speed changer 91 can be integrally disposed.
Further, in some embodiments of the invention, as shown in Figure 1 to Figure 3, auxiliary-motor 5 further includes the first control
Device 51, power motor 2 further include second controller 21, and auxiliary-motor 5 is connected respectively to 3 He of power battery by the first controller 51
The DC-DC converter 4, and power motor 2 is connected to by the first controller 51 and second controller 21.
Specifically, the first controller 51 is connected with second controller 21, power battery 3 and DC-DC converter 4 respectively,
First controller 51 can have AC-DC converter units, auxiliary-motor 5 that can generate alternating current when generating electricity, and AC-DC converter units can will be high
The convert alternating current that the power generation of Medium-voltage Motor 2 generates is high voltage direct current such as 600V high voltage direct currents, is filled to power battery 3 with realizing
Electricity is powered to power motor 2, at least one of power supply of DC-DC converter 4.
Similarly, second controller 21 can have DC-AC converter units, the first controller 51 that auxiliary-motor 5 can generate electricity and produce
Raw convert alternating current is high voltage direct current, and the first controller 51 can be become the high voltage direct current to swap out by DC-AC converter units again
It is transformed to alternating current, to give power motor 2 to power.
In other words, as shown in figure 3, when auxiliary-motor 5 is generated electricity, auxiliary-motor 5 can give power by the first controller 51
Battery 3 charges and/or powers to DC-DC converter 4.In addition, auxiliary-motor 5 can also pass through the first controller 51 and second controller
21 power to power motor 2.
Further, as shown in Figure 1 to Figure 3, DC-DC converter 4 is also connected with power battery 3.DC-DC converter 4 is also
It is connected with power motor 2 by second controller 21.
In some embodiments, as shown in figure 3, there is the first controller 51 first DC terminal DC1, second controller 21 to have
There is the second DC terminal DC2, DC-DC converter 4 has a third DC terminal DC3, and the third DC terminal DC3 of DC-DC converter 4 can be with
First DC terminal DC1 of the first controller 51 is connected, with the high straightening to the first controller 51 by the first DC terminal DC1 outputs
Galvanic electricity carries out DC-DC transformation.Also, the third DC terminal DC3 of DC-DC converter 4 can also be connected with power battery 3, Jin Er
First DC terminal DC1 of one controller 51 can be connected with power battery 3, so that the first controller 51 passes through the first DC terminal DC1
Output high voltage direct current is to power battery 3 to give power battery 3 to charge.Further, the third DC terminal of DC-DC converter 4
DC3 can also be connected with the second DC terminal DC2 of second controller 21, and then the first DC terminal DC1 of the first controller 51 can be with
Second DC terminal DC2 of second controller 21 is connected, so that the first controller 51 exports high voltage direct current by the first DC terminal DC1
Electricity is to second controller 21 to give power motor 2 to power.
Further, as shown in figure 3, DC-DC converter 4 also respectively with the first electrical equipment 10 in hybrid vehicle
It is connected with low tension battery 20 with to the first electrical equipment 10 and the power supply of low tension battery 20, and low tension battery 20 is also with first
Electrical equipment 10 is connected.
In some embodiments, as shown in figure 3, DC-DC converter 4 also has the 4th DC terminal DC4, DC-DC converter 4
The high voltage direct current and/or auxiliary-motor 5 that power battery 3 exports can be converted by the high voltage direct current that the first controller 51 exports
For low-voltage DC, and the low-voltage DC is exported by the 4th DC terminal DC4.Further, the 4th of DC-DC converter 4
DC terminal DC4 can be connected with the first electrical equipment 10, to give the first electrical equipment 10 to power, wherein the first electrical equipment 10 can
For low voltage equipment, including but not limited to car light, radio etc..4th DC terminal DC4 of DC-DC converter 4 can also with it is low
Accumulator 20 is pressed to be connected, to give low tension battery 20 to charge.
Also, low tension battery 20 is connected with the first electrical equipment 10, to give the first electrical equipment 10 to power, particularly,
When auxiliary-motor 5 stops power generation and 3 failure of power battery or not enough power supply, low tension battery 20 can be that the first electrical equipment 10 supplies
Electricity, to ensure the low pressure electricity consumption of vehicle, it is ensured that vehicle can realize pure fuel oil pattern traveling, improve vehicle mileage travelled.
As above, the third DC terminal DC3 of DC-DC converter 4 is connected with the first controller 51, and the 4th of DC-DC converter 4 the
DC terminal DC4 is connected with the first electrical equipment 10 and low tension battery 20 respectively, when power motor 2, second controller 21 and moves
When power battery 3 breaks down, auxiliary-motor 5 can generate electricity with by the first controller 51 and DC-DC converter 4 to the first electric appliance
Equipment 10 powers and/or charges to low tension battery 20, so that hybrid vehicle is travelled with pure fuel oil pattern.
In other words, when power motor 2, second controller 21 and power battery 3 break down, the first controller 51 can incite somebody to action
The convert alternating current that the power generation of auxiliary-motor 5 generates is high voltage direct current, what DC-DC converter 4 can swap out the change of the first controller 50
High voltage direct current is transformed to low-voltage DC, to give the first electrical equipment 10 to power and/or charge to low tension battery 20.
Auxiliary-motor 5 and DC-DC converter 4 have independent supplying channels all the way as a result, when power motor 2, second controller 21
When breaking down with power battery 3, electric drive is cannot achieve, passes through the independent confession of auxiliary-motor 5 and DC-DC converter 4 at this time
Electric channel, it is ensured that the low pressure electricity consumption of vehicle, it is ensured that vehicle can realize pure fuel oil pattern traveling, improve vehicle mileage travelled.
Further combined with the embodiment of Fig. 3, the first controller 51, second controller 21 and power battery 3 also respectively with it is mixed
The second electrical equipment 30 closed in power vehicle is connected.
In some embodiments, as shown in figure 3, the first DC terminal DC1 of the first controller 51 can be with the second electrical equipment
30 are connected, and when auxiliary-motor 5 is generated electricity, auxiliary-motor 5 can be powered by the first controller 51 directly to the second electrical equipment 30.
In other words, the convert alternating current that the AC-DC converter units of the first controller 51 can also generate the power generation of auxiliary-motor 5 is high voltage direct current
Electricity, and power directly to the second electrical equipment 30.
Similarly, power battery 3 can also be connected with the second electrical equipment 30, to give the second electrical equipment 30 to power.In other words,
The high voltage direct current that power battery 3 exports can directly feed the second electrical equipment 30.
Wherein, the second electrical equipment 30 can be high-voltage electrical equipment, it may include but it is not limited to compressor of air conditioner, PTC
(Positive Temperature Coefficient, positive temperature coefficient) heater etc..
As above, generated electricity by auxiliary-motor 5, it can be achieved that be power battery 3 charging or be power motor 2 power supply or be first
Electrical equipment 10 and the power supply of the second electrical equipment 30.Also, power battery 3 can be supplied by second controller 21 for power motor 2
Electricity, or power for the second electrical equipment 30, also can be the first electrical equipment 10 and/or low tension battery by DC-DC converter 4
20 power supplies.Thus vehicle power supply mode is enriched, power demand of the vehicle under different operating modes is met, improves the property of vehicle
Energy.
It should be noted that in embodiments of the present invention, low pressure can refer to the voltage of 12V (volt) or 24V, high pressure can refer to 600V
Voltage, but not limited to this.
As a result, in the dynamical system of the hybrid vehicle of the embodiment of the present invention, engine can be made not join in low speed
Clutch abrasion or sliding wear are reduced, while reducing pause and transition in rhythm or melody sense into without the use of clutch with driving, improve comfort, and
And engine can be made to be operated in economic zone in low speed, only power generation does not drive, and reduces oil consumption, reduces engine noise, dimension
Vehicle low speed electric equilibrium and low speed ride comfort are held, vehicle performance is promoted.Moreover, auxiliary-motor can directly be power battery charging,
It is alternatively low-voltage device power supply such as low tension battery, the first electrical equipment simultaneously, can also be used as starter motor.
Furthermore, as shown in figure 4, the dynamical system of hybrid vehicle further includes control module 101, control module
101 for controlling the dynamical system of hybrid vehicle.It should be understood that control module 101 can be hybrid power
The controller with control function is integrated in automobile, may be, for example, in the entire car controller of hybrid vehicle, Fig. 3 embodiments
The first controller 51 and second controller 21 etc. it is integrated, but not limited to this.Control module 101 is described in detail below to be held
Capable control method.
In some embodiments of the invention, control module 101 is used to obtain SOC value (the State of of power battery 3
Charge, state-of-charge are also remaining capacity), the speed of the SOC value of low tension battery 20 and hybrid vehicle, and according to
The SOC value of power battery 3 and the speed control auxiliary-motor 5 of hybrid vehicle enter generated output shaping modes, so as to start
Machine 1 operates in preset optimal economic region, wherein after auxiliary-motor 5 enters generated output shaping modes, control module 101
It is additionally operable to that the generated output of auxiliary-motor 5 is adjusted according to the SOC value of low tension battery 20.Wherein, generated output adjusts mould
Formula is the pattern that the generated output of engine is adjusted, can be by controlling 1 band of engine in generated output shaping modes
Dynamic auxiliary-motor 5 generates electricity to be adjusted with the generated output to auxiliary-motor 5.It should be noted that hybrid power vapour can be passed through
The SOC value of the SOC value and low tension battery 20 of the battery management system acquisition power battery 3 of vehicle, to which battery management system will
The SOC value of collected power battery 3 and the SOC value of low tension battery 20 are sent to control module 101, so that control module
101 obtain the SOC value of the SOC value and low tension battery 20 of power battery 3.
It should be noted that determining the default optimal economic region of engine 1 in combination with engine's fuel consumption characteristics loop image.
It is illustrated in figure 5 an example of engine's fuel consumption characteristics loop image, wherein side ordinate is the output torque of engine 1, horizontal
Coordinate is the rotating speed of engine 1, and curve a is the fuel-economy curve of engine 1.The corresponding region of fuel-economy curve is to send out
The optimal economic region of motivation, in other words when the torque of engine 1 and torque are located on the fuel-economy curve of engine optimum,
Engine is in optimal economic region.As a result, in embodiments of the present invention, control module 101 can be by controlling turning for engine 1
Speed and output torque are fallen on engine fuel economic curve such as curve a, so that engine 1 operates in preset optimal economic
Region.
Specifically, during hybrid electric vehicle is sailed, engine 1 can be output power to mixed by clutch 6
The wheel 7 of power vehicle is closed, and engine 1 can also drive auxiliary-motor 5 to generate electricity.The output power master of engine as a result,
To include two parts, part output is to auxiliary-motor 5, that is, the generated output for driving auxiliary-motor 5 to generate electricity, another part is defeated
Go out to wheel 7, that is, drives the driving power of wheel 7.
When engine 1 drives auxiliary-motor 5 to be generated electricity, control module 101 can obtain the SOC value of power battery 3 first
With the speed of hybrid vehicle, auxiliary-motor 5 is then controlled according to the SOC value of power battery 3 and the speed of hybrid vehicle
Into generated output shaping modes, so that engine 1 is operated in preset optimal economic region.In generated output shaping modes,
Control module 101 can adjust the power generation work(of auxiliary-motor 5 under the premise of so that engine 1 is operated in preset optimal economic region
Rate.Wherein, after auxiliary-motor 5 enters generated output shaping modes, SOC value of the control module 101 also according to low tension battery 20
Further adjust the generated output of auxiliary-motor 5.
More specifically, in one embodiment of the invention, control module 101 is further used for according to power battery 3
The generated output of the speed control auxiliary-motor 5 of SOC value, the SOC value of low tension battery 20 and hybrid vehicle, and according to pair
The generated output that the generated output of motor 5 obtains engine 1 operates in preset optimal economic region to control engine 1.
Thereby, it is possible to make engine 1 be operated in preset optimal economic region, since engine 1 is in preset best warp
Help region oil consumption is minimum, fuel economy highest, so as to reduce the oil consumption of engine 1, reduce the noise of engine 1, carry
The economy of high vehicle operation.Moreover, because auxiliary-motor 5 has higher generated output and generating efficiency when low speed, so as to
To meet the power demand run at a low speed, vehicle low speed electric equilibrium can be maintained, vehicle low speed ride comfort is maintained, promotes vehicle
Power performance.Wherein, by power battery charging, it can be ensured that the power demand of power motor and high-voltage electrical equipment, in turn
Ensure that power motor drives vehicle normally travel, also, by charging to low tension battery, it can be ensured that the use of low voltage equipment
Electricity demanding, and vehicle can be realized by low tension battery when auxiliary-motor stops power generation and power battery failure or not enough power supply
Low-voltage power supply, and then ensure that vehicle can realize pure fuel oil pattern traveling, improve vehicle mileage travelled.
Further, according to one embodiment of present invention, control module 101 is used for：When the SOC value of power battery 3 is big
In preset limiting value and less than or equal to the first preset value when, if the speed of hybrid vehicle be less than the first preset vehicle speed,
It controls auxiliary-motor 5 and enters generated output shaping modes.
Wherein, the first preset value can be the upper bound limit value of the SOC value of pre-set power battery 3, for example, stop filling
The decision content of electricity, is preferably 30%.Preset limiting value can be the lower bound limit value of the SOC value of pre-set power battery 3,
The decision content for for example, stopping electric discharge, is preferably 10%.It can be by power battery 3 according to the first preset value and preset limiting value
SOC value be divided into three sections, i.e. the first electricity section, the second electricity section and third electricity section, when power battery 3
When SOC value is less than or equal to preset limiting value, the SOC value of power battery 3 is in the first electricity section, at this time power battery 3
Only charging is not discharged；When the SOC value of power battery 3 is more than preset limiting value and is less than or equal to the first preset value, power
The SOC value of battery 3 is in the second electricity section, and there are charge requirements for power battery 3 at this time, you can is actively filled to power battery 3
Electricity；When the SOC value of power battery 3 is more than the first preset value, the SOC value of power battery 3 is in third electricity section, moves at this time
Power battery 3 can not charge, i.e., power battery 3 will not actively be given to charge.
Specifically, control module 101, can after obtaining the speed of SOC value and hybrid vehicle of power battery 3
The section residing for the SOC value of power battery 3 is judged, if the SOC value of power battery 3 is in the second electricity section, power battery 3
SOC value be more than preset limiting value and be less than or equal to the first preset value, then explanation can charge to power battery 3, this
When control module 101 further judge the speed of hybrid vehicle whether less than the first preset vehicle speed, if hybrid power vapour
The speed of vehicle is less than the first preset vehicle speed, then controls auxiliary-motor 5 and enter generated output shaping modes, at this time hybrid vehicle
Speed is relatively low, and required driving force is less, and power motor 2 is enough that hybrid electric vehicle is driven to sail, and engine 1 can only drive secondary
Motor 5 generates electricity, and is not involved in driving.
In low speed, engine only generates electricity and is not involved in driving as a result, and since engine is not involved in driving, clutch is without making
With so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improve comfort.
Further, control module 101 is additionally operable to：When power battery 3 SOC value be more than preset limiting value and less than etc.
When the speed of the first preset value and hybrid vehicle is less than the first preset vehicle speed, the vehicle of hybrid vehicle is obtained
Demand power, and when vehicle demand power is less than or equal to the maximum allowable generated output of auxiliary-motor 5, control auxiliary-motor 5 enters
Generated output shaping modes.
That is, being more than preset limiting value in the SOC value for judging power battery 3 and being preset less than or equal to first
Value, and the speed of hybrid vehicle is less than after the first preset vehicle speed, control module 101 can also further judge that vehicle needs
Ask whether power is more than the maximum allowable generated output of auxiliary-motor 5, if vehicle demand power is less than or equal to the maximum of auxiliary-motor 5
Allow generated output, then controls auxiliary-motor 5 and enter generated output shaping modes, at this point, the driving force needed for vehicle is less, and it is whole
Vehicle demand power is smaller, and power motor 2 is enough that hybrid electric vehicle is driven to sail, and engine 1 only can drive auxiliary-motor 5 to be sent out
Electricity is not involved in driving.
In low speed, engine only generates electricity and is not involved in driving as a result, and since engine is not involved in driving, clutch is without making
With so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improve comfort.
Further, control module 101 is additionally operable to：When the SOC value of power battery is more than preset limiting value and is less than
It is less than the first preset vehicle speed equal to the speed of the first preset value, hybrid vehicle and vehicle demand power is less than or equal to secondary electricity
When the maximum allowable generated output of machine, the gas pedal depth of hybrid vehicle and the vehicle resistance of hybrid vehicle are obtained
Power, and it is less than or equal to the vehicle resistance of the first predetermined depth and hybrid vehicle in advance less than or equal to first in gas pedal depth
When handicapping power, control auxiliary-motor enters generated output shaping modes.
It should be noted that the car resistance that the vehicle resistance of hybrid vehicle can be hybrid vehicle for example rolls
Resistance, acceleration resistance, grade resistance and air drag etc..
That is, being more than preset limiting value in the SOC value for judging power battery 3 and being preset less than or equal to first
Value, and the speed of hybrid vehicle is less than the first preset vehicle speed, and vehicle demand power is permitted less than or equal to the maximum of auxiliary-motor 5
Perhaps after generated output, control module 101 can also further judge gas pedal depth whether be more than the first predetermined depth and
Whether the vehicle resistance of hybrid vehicle is more than the first default resistance, is preset deeply if gas pedal depth is less than or equal to first
The vehicle resistance of degree or hybrid vehicle is less than or equal to the first default resistance, then controls auxiliary-motor 5 and enter generated output tune
Section pattern, at this point, the driving force needed for vehicle is less, and vehicle demand power is smaller, and gas pedal depth is smaller, vehicle resistance
Also smaller, power motor 2 is enough that hybrid electric vehicle is driven to sail, and engine 1 only can drive auxiliary-motor 5 to generate electricity, and not join
With driving.
In low speed, engine only generates electricity and is not involved in driving as a result, and since engine is not involved in driving, clutch is without making
With so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improve comfort.
As above, when hybrid vehicle is run at a low speed, engine 1 only power generation can be not involved in driving, not due to engine
Driving is participated in, clutch is without using so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improving easypro
Adaptive, also, so that engine is operated in economic zone in low speed, the oil consumption due to engine in preset optimal economic region
Minimum, fuel economy highest reduces engine noise so as to reduce oil consumption, the economy of vehicle operation is improved, to tie up
Vehicle low speed electric equilibrium and low speed ride comfort are held, vehicle performance is promoted.
A specific embodiment according to the present invention, control module 101 are additionally operable to：When control engine 1 individually drives pair
Motor 5 generated electricity and control power motor 2 alone output driving power when, according to following formula obtain engine 1 power generation work(
Rate：
P0=P1/ η/ζ
Wherein, P0 is the generated output of engine 1, and P1 is the generated output of auxiliary-motor 5, and η Belt Transmission Efficiencies, ζ is pair
The efficiency of motor 5.
That is, in the case where engine 1 can only generate electricity and be not involved in driving, control module 101 can be according to auxiliary-motor 5
Generated output, Belt Transmission Efficiency η and auxiliary-motor 5 efficiency ζ calculate the generated output P0 of engine 1, and control and start
Machine 1 drives auxiliary-motor 5 to generate electricity with the generated output P0 of acquisition, to control the generated output of auxiliary-motor 5.
In addition, according to one embodiment of present invention, control module 101 is additionally operable to：It is less than in the SOC value of power battery 3
Preset limiting value or the speed of hybrid vehicle are more than or equal to the first preset vehicle speed or vehicle demand power is more than pair
The maximum allowable generated output or gas pedal depth of motor 5 are more than the whole of the first predetermined depth or hybrid vehicle
When vehicle resistance is more than the first default resistance, control engine 1 participates in driving.
That is, in speed of the SOC value of power battery 3 less than preset limiting value M2 or hybrid vehicle
It is more than the maximum allowable generated output of auxiliary-motor 5 more than or equal to the first preset vehicle speed or vehicle demand power or throttle is stepped on
When plate depth is more than the vehicle resistance of the first predetermined depth or hybrid vehicle more than the first default resistance, control module
101 control engines 1 participate in driving, at this point, power battery 3 no longer discharges, the driving force needed for vehicle is larger, vehicle demand work(
Rate is larger, gas pedal depth is larger or vehicle resistance is also larger, and power motor 2 is not enough to driving hybrid electric vehicle and sails,
Engine 1 participates in driving to carry out supplying driving.
Engine 1 can participate in driving in the driving force deficiency that power motor 2 exports as a result, so that it is guaranteed that vehicle is normal
Traveling, improves the power performance of vehicle, improves the mileage travelled of vehicle.
More specifically, control module 101 is additionally operable to：When vehicle demand power is more than the maximum allowable power generation work(of auxiliary-motor 5
When rate, also controls engine 1 and participate in driving so that engine 1 outputs power to wheel by clutch 6.
Also, control module 101 is additionally operable to：When the SOC value of power battery 3 is less than or equal to preset limiting value, control
Engine 1 participates in driving so that engine 1 outputs power to wheel by clutch 6；When the SOC value of power battery 3 is less than
Speed equal to the first preset value, hybrid vehicle is less than the first preset vehicle speed and gas pedal depth is more than first and presets deeply
When spending, control engine 1 participates in driving so that engine 1 outputs power to wheel by clutch 6；When power battery 3
SOC value is less than or equal to the first preset value, the speed of hybrid vehicle is less than the whole of the first preset vehicle speed and hybrid vehicle
When vehicle resistance is more than the first default resistance, engine 1 participates in driving so that engine 1 outputs power to vehicle by clutch 6
Wheel.
That is, control module 101 can obtain the SOC value of power battery 3, the gas pedal of hybrid vehicle in real time
Depth, speed, vehicle resistance and vehicle demand power, and the SOC value of power battery 3, the throttle of hybrid vehicle are stepped on
Plate depth, speed and vehicle resistance are judged：
First, when the SOC value of power battery 3 is less than preset limiting value, because of the low battery of power battery 3, power
Battery 3 can not provide enough electric energy, and control module 101 controls engine 1 and power motor 2 simultaneously participates in driving, this time control
The also controllable engine 1 of molding block 101 drives auxiliary-motor 5 to generate electricity, and the generated output by adjusting auxiliary-motor 5 can make
Engine 1 is operated in preset optimal economic region.
Second, when the SOC value of power battery 3 is less than or equal to the first preset value, the speed of hybrid vehicle is less than first
When preset vehicle speed and gas pedal depth are more than the first predetermined depth, because gas pedal depth is deeper, the control hair of control module 101
Motivation 1 and power motor 2 simultaneously participate in driving, and the also controllable engine 1 of control module 101 drives auxiliary-motor 5 to be sent out at this time
Electricity, and the generated output by adjusting auxiliary-motor 5 can make engine 1 be operated in preset optimal economic region.
Third, when the SOC value of power battery 3 is less than or equal to the first preset value, the speed of hybrid vehicle is less than first
When the vehicle resistance of preset vehicle speed and hybrid vehicle is more than the first default resistance, because vehicle resistance is larger, control module 101
Control engine 1 and power motor 2 simultaneously participate in driving, and the also controllable engine 1 of control module 101 drives auxiliary-motor 5 at this time
It generates electricity, and the generated output by adjusting auxiliary-motor 5 can make engine 1 be operated in preset optimal economic region.
Engine 1 can participate in driving in the driving force deficiency that power motor 2 exports as a result, so that it is guaranteed that vehicle is normal
Traveling, improves the power performance of vehicle, improves the mileage travelled of vehicle.Also, controllable engine is operated in economic zone
Domain, oil consumption due to engine 1 in preset optimal economic region is minimum, fuel economy highest, so as to reduce oil consumption, drop
Low engine noise improves vehicle economic performance.
In addition, control module 101 is additionally operable to：When the SOC value of power battery 3 is less than or equal to preset limiting value, and mixing
When the speed of power vehicle is more than the first preset vehicle speed, control engine 1 will participate in driving so that engine 1 will by clutch 6
Power output is to wheel 7.
Engine 1 can participate in driving in the driving force deficiency that power motor 2 exports as a result, so that it is guaranteed that vehicle is normal
Traveling, improves the power performance of vehicle, improves the mileage travelled of vehicle.
However, it is to be understood that control module 101 is additionally operable to：When the SOC value of power battery 3 is more than the first preset value
When, engine 1 does not drive auxiliary-motor 5 to generate electricity, and the electricity of power battery 3 is close to full electricity at this time, without charging, engine 1
Auxiliary-motor 5 is not driven to generate electricity.That is, when the electricity of power battery 3 is close to full electricity, engine 1 does not drive secondary electricity
Machine 5 generates electricity, to which auxiliary-motor 5 does not charge to power battery 3.
Furthermore, after auxiliary-motor 5 enters generated output shaping modes, control module 101 can be to the hair of auxiliary-motor 5
Electrical power is adjusted, and the generated output adjustment process of the control module of the embodiment of the present invention 101 is specifically described below.
According to one embodiment of present invention, control module 101 is additionally operable to：Mould is adjusted when auxiliary-motor 5 enters generated output
After formula, according to the charging of the vehicle demand power of hybrid vehicle, the charge power and low tension battery 20 of power battery 3
Power, low tension battery 20 SOC value the generated output of auxiliary-motor 5 is adjusted.
Specifically, according to the vehicle demand power of hybrid vehicle, the charge power and low tension battery of power battery 3
The formula that 20 charge power adjusts the generated output of auxiliary-motor 5 can be as follows：
P1=P2+P3+P4, wherein P2=P11+P21,
Wherein, P1 is the generated output of auxiliary-motor 5, and P2 is vehicle demand power, and P3 is the charge power of power battery 3,
P4 is the charge power of low tension battery 20, and P11 is vehicle driving power, and P21 is electrical equipment power.
It should be noted that electrical equipment includes the first electrical equipment 10 and the second electrical equipment 30, i.e. electrical equipment work(
Rate P21 may include the power needed for high-voltage electrical equipment and low voltage equipment.
It should be noted that vehicle driving power P11 may include that the output power of power motor 2, control module 101 can roots
Vehicle driving power P11 is obtained according to default throttle-torque curve of power motor 2 and the rotating speed of power motor 2, wherein pre-
If throttle-torque curve can be determined when hybrid electric vehicle power matches；What control module 101 can be run according to vehicle
Electrical equipment obtains electrical equipment power P 21 in real time, such as calculates electrical equipment power P 21 by DC consumption in bus；Control
Molding block 101 can obtain the charge power P3 of power battery 3 according to the SOC value of power battery 3, and according to low tension battery 20
SOC value obtains the charge power P4 of low tension battery 20.
Specifically, during hybrid electric vehicle is sailed, control module 101 can obtain the charging work(of power battery 3
Rate P3, the charge power P4 of low tension battery 20, vehicle driving power P11 and electrical equipment power P 21, and by power battery 3
Charge power P3, low tension battery 20 the sum of charge power P4, vehicle driving power P11 and electrical equipment power P 21 make
For the generated output P1 of auxiliary-motor 5, as a result, control module 101 can according to calculated P1 values to the generated output of auxiliary-motor 5 into
Row is adjusted, such as control module 101 can control the output torque and rotating speed of engine 1 according to calculated P1 values, with
The power for driving auxiliary-motor 5 to generate electricity in engine 1 is adjusted.
Further, according to one embodiment of present invention, control module 101 is additionally operable to：Obtain the SOC of power battery 3
It is worth rate of change, and according to vehicle demand power P2 minimum output power Pmins corresponding with the optimal economic region of engine 1
Between relationship and the SOC value rate of change of power battery 3, the SOC value of low tension battery 20, low tension battery 20 SOC
It is worth the generated output that rate of change adjusts auxiliary-motor 5.
It should be understood that the SOC value that control module 101 can obtain power battery 3 according to the SOC value of power battery 3 becomes
Change rate, for example, each time interval t acquires the SOC value of a power battery 3, it so can be by the current SOC of power battery 3
The SOC value rate of change of value and the difference of previous SOC value and the ratio of time interval t as power battery 3.It similarly, can basis
The SOC value of low tension battery 20 obtains the SOC value rate of change of low tension battery 20, for example, each time interval t acquisitions are primary
The SOC value of low tension battery 20, so can be by the difference of the current SOC value of low tension battery 20 and previous SOC value and time interval t
SOC value rate of change of the ratio as low tension battery 20.
Specifically, the optimal economic region of engine can be determined by universal characteristic curve of engine according to figure 5, into
And the corresponding minimum output power Pmin in optimal economic region for obtaining engine, control module 101 are determining engine most
After the corresponding minimum output power Pmin in good economic zone, you can according to the best warp of vehicle demand power P2 and engine 1
SOC value rate of change, the low tension battery of relationship and power battery 3 between the corresponding minimum output power Pmin in Ji region
20 SOC value, the SOC value rate of change of low tension battery 20 adjust the generated output of auxiliary-motor 5.
As a result, when hybrid vehicle is run at a low speed, engine is made to be operated in economic zone, oil consumption can be reduced, reduced
Engine noise improves the economic performance of vehicle, also, engine 1 only power generation can be not involved in driving in low speed, due to starting
Machine is not involved in driving, and clutch is without using so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improving
Comfort, and then vehicle low speed electric equilibrium and low speed ride comfort are maintained, promote vehicle performance.
It is described further below after auxiliary-motor 5 enters generated output shaping modes, control module 101 is according to vehicle demand
Relationship and power battery 3 between the minimum output power Pmin corresponding with the optimal economic region of engine 1 of power P 2
SOC value rate of change, the SOC value of low tension battery 20, low tension battery 20 SOC value rate of change adjust auxiliary-motor 5 hair
The specific regulative mode of electrical power.
Specifically, control module 101 is additionally operable to：When the SOC value of low tension battery 20 is more than preset low battery threshold value,
The charge power P3 of power battery 3 is obtained according to the SOC value rate of change of power battery 3, and judges the charging work(of power battery 3
Whether rate P3 is less than the difference of optimal economic the region corresponding minimum output power Pmin and vehicle demand power P2 of engine 1,
Wherein, if the charge power P3 of power battery 3 is less than the corresponding minimum output power Pmin in optimal economic region of engine 1
And the difference of vehicle demand power P2 is then generated electricity with the minimum output power to adjust auxiliary-motor 5 by controlling engine 1
Generated output；If the charge power P3 of power battery 3 is more than or equal to the corresponding minimum output in optimal economic region of engine 1
The difference of power P min and vehicle demand power P2, then according to the sum of the charge power P3 of power battery 3 and vehicle demand power P2
Output power of the engine 1 in preset optimal economic region is obtained, and by controlling engine 1 with the output power of acquisition
It generates electricity to adjust the generated output of auxiliary-motor 5.
Specifically, control module 101 is additionally operable to：When the SOC value of low tension battery 20 is less than or equal to preset low battery threshold
When value, the SOC value rate of change of the SOC value rate of change and power battery 3 of low tension battery 20 is obtained, and according to low pressure electric power storage
The SOC value rate of change in pond 20 obtains the charge power P4 of low tension battery 20 and the SOC value rate of change according to power battery 3
The charge power P3 of power battery 3 is obtained, and judges the charge power P4 of low tension battery 20 and the charging work(of power battery 3
The sum of rate P3 whether be less than engine 1 the corresponding minimum output power Pmin in optimal economic region and vehicle demand power P2 it
Difference, wherein if the sum of the charge power P4 of low tension battery 20 and the charge power P3 of power battery 20 are less than engine 1
The difference of optimal economic region corresponding minimum output power Pmin and vehicle demand power P2, then by controlling engine 1 with this
Minimum output power Pmin generates electricity to adjust the generated output of auxiliary-motor 5；If the charge power P4 of low tension battery 20
Minimum output power corresponding more than or equal to the optimal economic region of engine 1 with the sum of the charge power P3 of power battery 3
The difference of Pmin and vehicle demand power P2, then according to the charge power P3 of power battery 3, the charge power P4 of low tension battery 20
Output power of the engine 1 in preset optimal economic region is obtained with the sum of vehicle demand power P2, and passes through control
Engine 1 is generated electricity with the output power of acquisition to adjust the generated output of auxiliary-motor 5.
It should be noted that the SOC value rate of change for the power battery 3 that can prestore in control module 101 and power battery 3
The first relation table between charge power P3, as a result, control module 101 obtain power battery 3 SOC value rate of change it
Afterwards, the charge power P3 of corresponding power battery 3 can be obtained by comparing the first relation table.For example, the SOC of power battery 3
The first relation table being worth between rate of change and the charge power P3 of power battery 3 can be as shown in table 1 below.
Table 1
| The SOC value rate of change of power battery 3 | A1 | A2 | A3 | A4 | A5 |
| The charge power of power battery 3 | B1 | B2 | B3 | B4 | B5 |
By upper table 1 it is found that control module 101 can obtain corresponding move when the SOC value rate of change of power battery 3 is A1
The charge power P3 of power battery 3 is B1；When the SOC value rate of change of power battery 3 is A2, control module 101 can obtain correspondence
Power battery 3 charge power P3 be B2；When the SOC value rate of change of power battery 3 is A3, control module 101 can obtain
The charge power P3 of corresponding power battery 3 is B3；When the SOC value rate of change of power battery 3 is A4, control module 101 can
The charge power P3 for obtaining corresponding power battery 3 is B4；The control module when the SOC value rate of change of power battery 3 is A5
The 101 charge power P3 that can obtain corresponding power battery 3 are B5.
Similarly, can prestore SOC value rate of change and the low tension battery 20 of low tension battery 20 in control module 101
The second relation table between charge power P4, control module 101 is in the SOC value rate of change for obtaining low tension battery 20 as a result,
Later, the charge power P4 of corresponding low tension battery 20 can be obtained by comparing the second relation table.For example, low tension battery
The first relation table between 20 SOC value rate of change and the charge power P4 of low tension battery 20 can be as shown in table 2 below.
Table 2
| The SOC value rate of change of low tension battery 20 | A11 | A12 | A13 | A14 | A15 |
| The charge power of low tension battery 20 | B11 | B12 | B13 | B14 | B15 |
By upper table 2 it is found that control module 101 can obtain correspondence when the SOC value rate of change of low tension battery 20 is A11
Low tension battery 20 charge power P4 be B11；The control module when the SOC value rate of change of low tension battery 20 is A12
The 101 charge power P4 that can obtain corresponding low tension battery 20 are B12；When the SOC value rate of changes of low tension battery 20 are
The charge power P4 that control module 101 can obtain corresponding low tension battery 20 when A13 is B13；As the SOC of low tension battery 20
The charge power P4 that control module 101 can obtain corresponding low tension battery 20 when value rate of change is A14 is B14；Work as low pressure
Control module 101 can obtain the charge power P4 of corresponding low tension battery 20 when the SOC value rate of change of accumulator 20 is A15
For B15.
Specifically, after auxiliary-motor 5 enters generated output shaping modes, control module 101 can obtain low tension battery
20 SOC value, the SOC value of power battery 3, vehicle demand power P2 (vehicle driving power P11 and electrical equipment power P 21 it
With), then, judge whether the SOC value of low tension battery 20 is more than preset low battery threshold value.
If the SOC value of low tension battery 20 is more than preset low battery threshold value, the SOC value for obtaining power battery 3 becomes
Change rate, and the charge power P3 of the corresponding power battery of the SOC value rate of change of inquiring power battery 33, it is suitable to select
Charge power P3 so that the SOC value of power battery 3 is increased, and further judge power battery 3 charge power P3 whether
The difference of minimum output power Pmin and vehicle demand power P2 corresponding less than the optimal economic region of engine 1, if so, i.e.
P3 ＜ Pmin-P2 are then generated electricity with minimum output power Pmin to adjust the power generation of auxiliary-motor 5 by controlling engine 1
Power controls engine 1 in the corresponding minimum output power Pmin operations in optimal economic region；If not, i.e. P3 >=Pmin-
P2 then obtains engine 1 in preset optimal economic according to the sum of the charge power P3 of power battery 3 and vehicle demand power P2
Output power in region, and generated electricity with the output power of acquisition to adjust the power generation of auxiliary-motor 5 by controlling engine 1
Power, i.e., search corresponding output power in the preset optimal economic region of engine 1, and the output power of the acquisition can be
The sum of charge power P3 and vehicle demand power P2 of power battery 3 are (P2+P3 or P11+P21+P3), can control start at this time
Machine 1 is generated electricity with the output power of acquisition.
If the SOC value of low tension battery 20 is less than or equal to preset low battery threshold value, the SOC of power battery 3 is obtained
It is worth rate of change, and the charge power P3 of the corresponding power battery of the SOC value rate of change of inquiring power battery 33, to select
Suitable charge power P3 enables the SOC value of power battery 3 to rise, and obtains the SOC value rate of change of low tension battery 20,
And the charge power P4 of the corresponding low tension battery of the SOC value rate of change of inquiring low tension battery 20 20, it is suitable to select
Charge power P4 so that the SOC value of low tension battery 20 is increased, and further judge the charge power of low tension battery 20
Whether the sum of P4 and charge power P3 of power battery 3 are less than the corresponding minimum output power in the optimal economic region of engine 1
The difference of Pmin and vehicle demand power P2.If so, i.e. P3+P4 ＜ Pmin-P2, then defeated with the minimum by controlling engine 1
Go out power P min to generate electricity to adjust the generated output of auxiliary-motor 5, that is, it is corresponding most in optimal economic region to control engine 1
Small output power Pmin operations, and subtract vehicle demand power P2's with the corresponding minimum output power Pmin in optimal economic region
Power, that is, Pmin-P2 charges to power battery 3 and low tension battery 20；If not, i.e. P3+P4 >=Pmin-P2, then according to power
The sum of the charge power P3 of battery 3, the charge power P4 of low tension battery 20 and vehicle demand power P2 obtain engine 1 pre-
If optimal economic region in output power, and by control engine 1 with the output power of acquisition generate electricity with adjust
The generated output for saving auxiliary-motor 5, i.e., search corresponding power in the preset optimal economic region of engine 1, the acquisition
Output power is the sum of the charge power P4 and vehicle demand power P2 of the charge power P3 of power battery 3, low tension battery 20
That is (P2+P3+P4 or P11+P21+P3+P4), and control engine 1 and generated electricity with the output power of acquisition.
In low speed, engine can be operated in economic zone as a result, and only power generation is not involved in driving, from without the use of from
Clutch reduces clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improves comfort, and reduce oil consumption, reduction is started
Machine noise, and then vehicle low speed electric equilibrium and low speed ride comfort are maintained, promote vehicle performance.
To sum up, the dynamical system of the hybrid vehicle proposed according to embodiments of the present invention, engine will by clutch
For power output to the wheel of hybrid vehicle, power motor outputs driving force to the wheel of hybrid vehicle, power battery
It powers to power motor, to realize to power battery charging, to power electric when auxiliary-motor is generated electricity under the drive of engine
Machine power supply, at least one of DC-DC converter power supply, control module obtains the SOC value of power battery, low tension battery
The speed of SOC value and hybrid vehicle, and auxiliary-motor is controlled according to the SOC value of power battery and the speed of hybrid vehicle
Into generated output shaping modes, so that engine operates in preset optimal economic region, when auxiliary-motor enters generated output
After shaping modes, control module is additionally operable to that the generated output of auxiliary-motor is adjusted according to the SOC value of low tension battery, to
Engine can be made to be not involved in driving in low speed, into without the use of clutch, clutch abrasion or sliding wear is reduced, reduce simultaneously
Pause and transition in rhythm or melody sense, improves comfort, and engine can be made to be operated in economic zone in low speed, and only power generation does not drive, and subtracts
Few oil consumption, reduces engine noise, maintains vehicle low speed electric equilibrium and low speed ride comfort, promotes vehicle performance.
In addition, the embodiment of the present invention also proposed a kind of hybrid vehicle.
Fig. 6 is the block diagram of hybrid vehicle according to the ... of the embodiment of the present invention.As shown in fig. 6, hybrid power vapour
Vehicle 200 includes the dynamical system 100 of the hybrid vehicle of above-described embodiment.
The hybrid vehicle proposed according to embodiments of the present invention is able to maintain that vehicle low speed electric equilibrium and low speed smooth-going
Property.
Hybrid vehicle based on above-described embodiment and its dynamical system, the embodiment of the present invention also propose that a kind of mixing is dynamic
The electricity-generating control method of power automobile.
Fig. 7 is the flow chart of the electricity-generating control method of hybrid vehicle according to the ... of the embodiment of the present invention.As shown in fig. 7,
The electricity-generating control method of hybrid vehicle, includes the following steps：
S1：Obtain speed, the hybrid vehicle of the SOC value and hybrid vehicle of the power battery of hybrid vehicle
Low tension battery SOC value；
It should be noted that the SOC value of power battery and low can be acquired by the battery management system of hybrid vehicle
The SOC value of accumulator is pressed, so as to obtain the SOC value of the SOC value and low tension battery of power battery.
S2：According to the SOC value of power battery and the speed of hybrid vehicle control the auxiliary-motor of hybrid vehicle into
Enter generated output shaping modes, so that the engine of hybrid vehicle operates in preset optimal economic region, wherein secondary electricity
Machine generates electricity under the drive of engine；
Wherein, generated output shaping modes are the pattern that the generated output of engine is adjusted, in generated output
Shaping modes can be generated electricity by control driven by engine auxiliary-motor and are adjusted with the generated output to auxiliary-motor.
It should be noted that determining the default optimal economic region of engine in combination with engine's fuel consumption characteristics loop image.
It is illustrated in figure 5 an example of engine's fuel consumption characteristics loop image, wherein side ordinate is the output torque of engine, horizontal
Coordinate is the rotating speed of engine, and curve a is the fuel-economy curve of engine.The corresponding region of fuel-economy curve is to start
The optimal economic region of machine, in other words when the torque of engine and torque are located on the fuel-economy curve of engine optimum, hair
Motivation is in optimal economic region.As a result, in embodiments of the present invention, it can be fallen by the rotating speed and output torque for controlling engine
On engine fuel economic curve such as curve a, so that engine operates in preset optimal economic region.
S3：After auxiliary-motor enters generated output shaping modes, the power generation according to the SOC value of low tension battery to auxiliary-motor
Power is adjusted.
Specifically, during hybrid electric vehicle is sailed, engine can output power to mixing by clutch
The wheel of power vehicle, and engine can also drive auxiliary-motor to generate electricity.The output power of engine includes mainly as a result,
Two parts, to auxiliary-motor, that is, the power for driving auxiliary-motor to generate electricity, another part is to export to wheel, i.e., for part output
Drive the power of wheel.
When driven by engine auxiliary-motor is generated electricity, the SOC value and hybrid vehicle of power battery can be obtained first
Speed, then according to the SOC value of power battery and the speed of hybrid vehicle control auxiliary-motor enter generated output adjust
Pattern, so that engine is operated in preset optimal economic region.In generated output shaping modes, engine can be made to be operated in
The generated output of auxiliary-motor is adjusted under the premise of preset optimal economic region.Wherein, enter generated output in auxiliary-motor to adjust
After pattern, the generated output of auxiliary-motor is further adjusted also according to the SOC value of low tension battery.
More specifically, in one embodiment of the invention, step S2 and step S3 further comprise, according to power battery
SOC value, the speed of the SOC value of low tension battery and hybrid vehicle control auxiliary-motor generated output, and according to pair
The generated output that the generated output of motor obtains engine operates in preset optimal economic region to control engine.
Thereby, it is possible to make engine be operated in preset optimal economic region, since engine is in preset optimal economic
The oil consumption in region is minimum, fuel economy highest reduces the noise of engine so as to reduce the oil consumption of engine, improves whole
The economy of vehicle operation.Moreover, because auxiliary-motor has higher generated output and generating efficiency when low speed, so as to meet
The power demand run at a low speed can maintain vehicle low speed electric equilibrium, maintain vehicle low speed ride comfort, promote the dynamic property of vehicle
Energy.Wherein, by power battery charging, it can be ensured that the power demand of power motor and high-voltage electrical equipment, and then ensure to move
Force motor drives vehicle normally travel, also, by charging to low tension battery, it can be ensured that the electricity consumption of low voltage equipment needs
It asks, and vehicle low pressure can be realized by low tension battery when auxiliary-motor stops power generation and power battery failure or not enough power supply
Power supply, and then ensure that vehicle can realize pure fuel oil pattern traveling, improve vehicle mileage travelled.
Further, according to one embodiment of present invention, when the SOC value of power battery is more than preset limiting value and small
When equal to the first preset value, if the speed of hybrid vehicle is less than the first preset vehicle speed, controls auxiliary-motor and enter hair
Electrical power shaping modes.
Wherein, the first preset value can be the upper bound limit value of the SOC value of pre-set power battery, for example, stop charging
Decision content, be preferably 30%.Preset limiting value can be the lower bound limit value of the SOC value of pre-set power battery, example
It is such as the decision content for stopping electric discharge, is preferably 10%.It can be by power battery according to the first preset value and preset limiting value
SOC value is divided into three sections, i.e. the first electricity section, the second electricity section and third electricity section, when the SOC value of power battery
When less than or equal to preset limiting value, the SOC value of power battery is in the first electricity section, and power battery only charges not at this time
Electric discharge；When the SOC value of power battery is more than preset limiting value and is less than or equal to the first preset value, the SOC of power battery
Value is in the second electricity section, and there are charge requirements for power battery at this time, you can actively gives power battery charging；Work as power battery
SOC value be more than the first preset value when, the SOC value of power battery is in third electricity section, and power battery can not charge at this time,
It will not actively give power battery charging.
Specifically, after obtaining the speed of SOC value and hybrid vehicle of power battery, it can determine whether power battery
SOC value residing for section, if the SOC value of power battery is in the second electricity section, the SOC value of power battery is more than default
Limiting value and be less than or equal to the first preset value, then explanation can charge to power battery, at this time further judge mixing
Whether the speed of power vehicle is less than the first preset vehicle speed, if the speed of hybrid vehicle is less than the first preset vehicle speed,
Control auxiliary-motor enters generated output shaping modes, and the speed of hybrid vehicle is relatively low at this time, and required driving force is less, moves
Force motor is enough that hybrid electric vehicle is driven to sail, and engine only can drive auxiliary-motor to generate electricity, and be not involved in driving.
In low speed, engine only generates electricity and is not involved in driving as a result, and since engine is not involved in driving, clutch is without making
With so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improve comfort.
Further, when the SOC value of power battery is more than preset limiting value and less than or equal to the first preset value and mixes
When closing the speed of power vehicle less than the first preset vehicle speed, the vehicle demand power of hybrid vehicle is also obtained, and in vehicle
When demand power is less than or equal to the maximum allowable generated output of auxiliary-motor, control auxiliary-motor enters generated output shaping modes.
That is, be more than preset limiting value in the SOC value for judging power battery and be less than or equal to the first preset value,
And the speed of hybrid vehicle is less than after the first preset vehicle speed, can also further judge whether vehicle demand power is more than
The maximum allowable generated output of auxiliary-motor, if vehicle demand power is less than or equal to the maximum allowable generated output of auxiliary-motor,
Control auxiliary-motor enters generated output shaping modes, at this point, the driving force needed for vehicle is less, and vehicle demand power is smaller,
Power motor is enough that hybrid electric vehicle is driven to sail, and engine only can drive auxiliary-motor to generate electricity, and be not involved in driving.
In low speed, engine only generates electricity and is not involved in driving as a result, and since engine is not involved in driving, clutch is without making
With so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improve comfort.
Further, when the SOC value of power battery is more than preset limiting value and less than or equal to the first preset value, mixing
The speed of power vehicle is less than the first preset vehicle speed and vehicle demand power is less than or equal to the maximum allowable generated output of auxiliary-motor
When, the vehicle resistance of the gas pedal depth and hybrid vehicle of hybrid vehicle is also obtained, and in gas pedal depth
When being less than or equal to the first default resistance less than or equal to the vehicle resistance of the first predetermined depth and hybrid vehicle, auxiliary-motor is controlled
Into generated output shaping modes.
It should be noted that the car resistance that the vehicle resistance of hybrid vehicle can be hybrid vehicle for example rolls
Resistance, acceleration resistance, grade resistance and air drag etc..
That is, be more than preset limiting value in the SOC value for judging power battery and be less than or equal to the first preset value,
And the speed of hybrid vehicle is less than the first preset vehicle speed, and vehicle demand power is less than or equal to the maximum allowable hair of auxiliary-motor
After electrical power, it can also further judge whether gas pedal depth is more than the whole of the first predetermined depth and hybrid vehicle
Whether vehicle resistance is more than the first default resistance, if gas pedal depth is less than or equal to the first predetermined depth and hybrid vehicle
Vehicle resistance be less than or equal to the first default resistance, then control auxiliary-motor and enter generated output shaping modes, at this point, needed for vehicle
Driving force it is less, and vehicle demand power is smaller, and gas pedal depth is smaller, and vehicle resistance is also smaller, and power motor is enough
Driving hybrid electric vehicle is sailed, and engine only can drive auxiliary-motor to generate electricity, and be not involved in driving.
In low speed, engine only generates electricity and is not involved in driving as a result, and since engine is not involved in driving, clutch is without making
With so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improve comfort.
As described above, when hybrid vehicle is run at a low speed, engine only power generation can be not involved in driving, due to engine
It is not involved in driving, clutch is without using so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improving
Comfort, also, so that engine is operated in economic zone in low speed, the oil due to engine in preset optimal economic region
Minimum, fuel economy highest is consumed, so as to reduce oil consumption, engine noise is reduced, improves the economy of vehicle operation, to
Vehicle low speed electric equilibrium and low speed ride comfort are maintained, vehicle performance is promoted.
A specific embodiment according to the present invention, when control engine individually drives auxiliary-motor to be generated electricity and controls
Power motor alone output driving power when, can according to following formula obtain engine generated output：
P0=P1/ η/ζ
Wherein, P0 is the generated output of engine, and P1 is the generated output of auxiliary-motor, and η Belt Transmission Efficiencies, ζ is secondary electricity
The efficiency of machine.
That is, in the case where engine can only generate electricity and be not involved in driving, generated output, skin that can be according to auxiliary-motor
The power generation work(that the efficiency ζ of V belt translation efficiency eta and auxiliary-motor calculates the generated output P0 of engine, and controls engine to obtain
Rate P0 drives auxiliary-motor to generate electricity, to control the generated output of auxiliary-motor.
In addition, according to one embodiment of present invention, according to one embodiment of present invention, in the SOC value of power battery
It is more than or equal to the first preset vehicle speed less than preset limiting value or the speed of hybrid vehicle or vehicle demand power is big
It is more than the first predetermined depth or hybrid vehicle in the maximum allowable generated output or gas pedal depth of auxiliary-motor
Vehicle resistance be more than the first default resistance when, control engine participate in driving.
That is, the SOC value in power battery is more than less than the speed of preset limiting value or hybrid vehicle
Equal to the maximum allowable generated output or gas pedal depth that the first preset vehicle speed or vehicle demand power are more than auxiliary-motor
When degree is more than the first default resistance more than the vehicle resistance of the first predetermined depth or hybrid vehicle, control module control
Engine participates in driving, at this point, power battery no longer discharges, the driving force needed for vehicle is larger, vehicle demand power is larger, oily
Door tread depths are larger or vehicle resistance is also larger, and power motor is not enough to driving hybrid electric vehicle and sails, and engine participates in
Driving is to carry out supplying driving.
Engine can participate in driving in the driving force deficiency that power motor exports as a result, so that it is guaranteed that the normal row of vehicle
It sails, improves the power performance of vehicle, improve the mileage travelled of vehicle.
More specifically, when vehicle demand power is more than the maximum allowable generated output of auxiliary-motor, engine ginseng is also controlled
With driving so that engine outputs power to the wheel of hybrid vehicle by clutch.
Also, when the SOC value of power battery be less than or equal to preset limiting value when, also control engine participate in drive so that
Engine outputs power to the wheel of hybrid vehicle by clutch；When the SOC value of power battery is less than or equal to first
Speed when being less than the first preset vehicle speed and gas pedal depth and being more than the first predetermined depth of preset value, hybrid vehicle, also
It controls engine and participates in driving so that engine outputs power to wheel by clutch；When the SOC value of power battery is less than
Speed equal to the first preset value, hybrid vehicle is more than less than the vehicle resistance of the first preset vehicle speed and hybrid vehicle
When the first default resistance, also controls engine and participate in driving so that engine outputs power to wheel by clutch.
That is, the SOC value of power battery, the gas pedal depth of hybrid vehicle, speed, whole can be obtained in real time
Vehicle resistance and vehicle demand power, and to the SOC value of power battery, the gas pedal depth of hybrid vehicle, speed and
Vehicle resistance is judged：
First, when the SOC value of power battery is less than preset limiting value, because of the low battery of power battery, power electric
Pond can not provide enough electric energy, control engine and power motor simultaneously participates in driving, and also controllable driven by engine
Auxiliary-motor generates electricity to charge to power battery, and also controllable driven by engine auxiliary-motor generates electricity at this time, and
Generated output by adjusting auxiliary-motor can make engine be operated in preset optimal economic region.
Second, when the SOC value of power battery is less than or equal to the first preset value, the speed of hybrid vehicle is less than first in advance
If speed and gas pedal depth are more than the first predetermined depth, because gas pedal depth is deeper, control module controls engine
Driving is simultaneously participated in power motor, also controllable driven by engine auxiliary-motor generates electricity at this time, and by adjusting secondary electricity
The generated output of machine can make engine be operated in preset optimal economic region.
Third, when the SOC value of power battery is less than or equal to the first preset value, the speed of hybrid vehicle is less than first in advance
If the vehicle resistance of speed and hybrid vehicle is more than the first default resistance, because vehicle resistance is larger, engine can control
Driving is simultaneously participated in power motor, also controllable driven by engine auxiliary-motor generates electricity at this time, and by adjusting secondary electricity
The generated output of machine can make engine be operated in preset optimal economic region.
Engine can participate in driving in the driving force deficiency that power motor exports as a result, so that it is guaranteed that the normal row of vehicle
It sails, improves the power performance of vehicle, improve the mileage travelled of vehicle.Also, controllable engine is operated in economic zone,
Oil consumption due to engine 1 in preset optimal economic region is minimum, fuel economy highest reduces so as to reduce oil consumption
Engine noise improves vehicle economic performance.
In addition, control module is additionally operable to：When the SOC value of power battery is less than or equal to preset limiting value, and hybrid power
When the speed of automobile is more than the first preset vehicle speed, control engine participates in driving so that engine is outputed power by clutch
To wheel.
Engine can participate in driving in the driving force deficiency that power motor exports as a result, so that it is guaranteed that the normal row of vehicle
It sails, improves the power performance of vehicle, improve the mileage travelled of vehicle.
However, it is to be understood that control module is additionally operable to：When the SOC value of power battery is more than the first preset value, hair
Motivation does not drive auxiliary-motor to generate electricity, and the electricity of power battery is close to full electricity at this time, and without charging, engine does not drive secondary electricity
Machine generates electricity.That is, when the electricity of power battery is close to full electricity, engine does not drive auxiliary-motor to generate electricity, from
And auxiliary-motor is not to power battery charging.
Furthermore, after auxiliary-motor enters electrical power shaping modes, the generated output of auxiliary-motor can be adjusted,
The generated output adjustment process of the embodiment of the present invention is specifically described below.
According to one embodiment of present invention, after auxiliary-motor enters generated output shaping modes, according to hybrid power vapour
The SOC value pair of the vehicle demand power of vehicle, the charge power of the charge power of power battery and low tension battery, low tension battery
The generated output of auxiliary-motor is adjusted.
Specifically, according to the vehicle demand power of hybrid vehicle, the charge power and low tension battery of power battery
Charge power adjust auxiliary-motor generated output formula it is as follows：
P1=P2+P3+P4, wherein P2=P11+P21,
P1 is the generated output of auxiliary-motor, and P2 is vehicle demand power, and P3 is the charge power of power battery, and P4 is low pressure
The charge power of accumulator, P11 are vehicle driving power, and P21 is electrical equipment power.
It should be noted that electrical equipment includes the first electrical equipment and the second electrical equipment, i.e. electrical equipment power P 21
It may include the power needed for high-voltage electrical equipment and low voltage equipment.
It should be noted that vehicle driving power P11 may include the output power of power motor, it can be according to power motor
The rotating speed of default throttle-torque curve and power motor obtains vehicle driving power P11, wherein default throttle-torque curve
It can be determined when hybrid electric vehicle power matches；Electrical equipment work(can be obtained in real time according to the electrical equipment that vehicle is run
Rate P21, such as electrical equipment power P 21 is calculated by DC consumption in bus；Power can be obtained according to the SOC value of power battery
The charge power P3 of battery, and according to the charge power P4 of the SOC value of low tension battery acquisition low tension battery.
Specifically, during hybrid electric vehicle is sailed, charge power P3, the low pressure electric power storage of power battery can be obtained
Charge power P4, vehicle driving power P11 and the electrical equipment power P 21 in pond, and by the charge power P3 of power battery, low pressure
The generated output of the sum of charge power P4, vehicle driving power P11 and electrical equipment power P 21 of accumulator as auxiliary-motor
P1 can be adjusted the generated output of auxiliary-motor according to calculated P1 values as a result, such as can be according to calculated P1 values pair
The output torque and rotating speed of engine are controlled, and are adjusted with the power to generate electricity to engine auxiliary-motor.
Further, according to one embodiment of present invention, the generated output of auxiliary-motor is adjusted, including：It obtains
The SOC value rate of change of power battery, and it is defeated according to vehicle demand power minimum corresponding with the optimal economic region of engine
Go out the SOC value rate of change of relationship and power battery between power, the SOC value of low tension battery, low tension battery SOC
It is worth the generated output that rate of change adjusts auxiliary-motor.
It should be understood that the SOC value rate of change of power battery can be obtained according to the SOC value of power battery, for example, often
A time interval t acquires the SOC value of a power battery, so can be by the difference of the current SOC value and previous SOC value of power battery
SOC value rate of change with the ratio of time interval t as power battery.Similarly, it can be obtained according to the SOC value of low tension battery
The SOC value rate of change of low tension battery is taken, for example, each time interval t acquires the SOC value of a low tension battery, so
It can be using the ratio of the difference of the current SOC value of low tension battery and previous SOC value and time interval t as the SOC of low tension battery
It is worth rate of change.
Specifically, the optimal economic region of engine can be determined by universal characteristic curve of engine according to figure 5, into
And the corresponding minimum output power in optimal economic region of engine is obtained, it is corresponding in the optimal economic region for determining engine
After minimum output power, you can according to vehicle demand power P2 minimum output works corresponding with the optimal economic region of engine
The SOC of the SOC value rate of change of relationship and power battery, the SOC value of low tension battery, low tension battery between rate Pmin
It is worth the generated output that rate of change adjusts auxiliary-motor.
As a result, when hybrid vehicle is run at a low speed, engine is made to be operated in economic zone, oil consumption can be reduced, reduced
Engine noise improves the economic performance of vehicle, also, engine only power generation can be not involved in driving in low speed, due to starting
Machine is not involved in driving, and clutch is without using so as to reduce clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improving
Comfort, and then vehicle low speed electric equilibrium and low speed ride comfort are maintained, promote vehicle performance.
It is described further below after auxiliary-motor 5 enters generated output shaping modes, according to vehicle demand power P2 and hair
The SOC value variation speed of relationship and power battery between the corresponding minimum output power Pmin in optimal economic region of motivation
Rate, the SOC value of low tension battery, low tension battery SOC value rate of change adjust auxiliary-motor generated output specific control
Mode.
Specifically, when the SOC value of low tension battery is more than preset low battery threshold value, according to the SOC value of power battery
Rate of change obtains the charge power of power battery, and judges whether the charge power of power battery is less than the best warp of engine
The difference of Ji region corresponding minimum output power and vehicle demand power, wherein if the charge power of power battery is less than hair
The difference of optimal economic the region corresponding minimum output power and vehicle demand power of motivation, then by control engine with this most
Small output power generates electricity to adjust the generated output of auxiliary-motor；If the charge power of power battery is more than or equal to engine
Optimal economic region corresponding minimum output power and vehicle demand power difference, then according to the charge power of power battery with
The sum of vehicle demand power obtains output power of the engine in preset optimal economic region, and by control engine with
The output power of acquisition generates electricity to adjust the generated output of auxiliary-motor.
Specifically, when the SOC value of low tension battery is less than or equal to preset low battery threshold value, low tension battery is obtained
The SOC value rate of change of SOC value rate of change and power battery, and it is low according to the acquisition of the SOC value rate of change of low tension battery
It presses the charge power of accumulator and obtains the charge power of power battery according to the SOC value rate of change of power battery, and sentence
Whether the sum of the charge power of disconnected low tension battery and the charge power of power battery are less than the optimal economic region pair of engine
The difference of the minimum output power and vehicle demand power answered, wherein if the charge power of low tension battery and power battery
The sum of charge power is less than the difference of optimal economic the region corresponding minimum output power and vehicle demand power of engine, then leads to
Control engine is crossed to be generated electricity with the minimum output power to adjust the generated output of auxiliary-motor；If low tension battery fills
Electrical power minimum output power corresponding more than or equal to the optimal economic region of engine with the sum of the charge power of power battery
And the difference of vehicle demand power, then according to the charge power of power battery, the charge power of low tension battery and vehicle demand work(
The sum of rate obtains output power of the engine in preset optimal economic region, and defeated with what is obtained by controlling engine
Go out power to generate electricity to adjust the generated output of auxiliary-motor.
It should be noted that the charging of the SOC value rate of change and power battery for the power battery that can prestore in control module
The first relation table between power P 3 is closed as a result, after the SOC value rate of change for obtaining power battery by comparing first
It is the charge power P3 that table can obtain corresponding power battery.For example, the SOC value rate of change and power battery of power battery
Charge power P3 between the first relation table can be as shown in table 3 below.
Table 3
| The SOC value rate of change of power battery | A1 | A2 | A3 | A4 | A5 |
| The charge power of power battery | B1 | B2 | B3 | B4 | B5 |
By upper table 3 it is found that the charging of corresponding power battery can be obtained when the SOC value rate of change of power battery is A1
Power P 3 is B1；The charge power P3 that corresponding power battery can be obtained when the SOC value rate of change of power battery is A2 is
B2；The charge power P3 that corresponding power battery can be obtained when the SOC value rate of change of power battery is A3 is B3；Work as power
The SOC value rate of change of battery can obtain corresponding power battery charge power P3 when being A4 is B4；As the SOC of power battery
Value rate of change can obtain corresponding power battery charge power P3 when being A5 is B5.
Similarly, can prestore the SOC value rate of change of low tension battery and the charging work(of low tension battery in control module
The second relation table between rate P4 is closed as a result, after the SOC value rate of change for obtaining low tension battery by comparing second
It is the charge power P4 that table can obtain corresponding low tension battery.For example, the SOC value rate of change and low pressure of low tension battery
The second relation table between the charge power P4 of accumulator can be as shown in table 4 below.
Table 4
| The SOC value rate of change of low tension battery | A11 | A12 | A13 | A14 | A15 |
| The charge power of low tension battery | B11 | B12 | B13 | B14 | B15 |
By upper table 4 it is found that corresponding low tension battery can be obtained when the SOC value rate of change of low tension battery is A11
Charge power P4 be B11；Corresponding low tension battery can be obtained when the SOC value rate of change of low tension battery is A12
Charge power P4 is B12；Filling for corresponding low tension battery can be obtained when the SOC value rate of change of low tension battery is A13
Electrical power P 4 is B13；The charging of corresponding low tension battery can be obtained when the SOC value rate of change of low tension battery is A14
Power P 4 is B14；The charging work(of corresponding low tension battery can be obtained when the SOC value rate of change of low tension battery is A15
Rate P4 is B15.
Specifically, after secondary electricity 5 enters electrical power shaping modes, SOC value, the power battery of low tension battery can be obtained
SOC value, vehicle demand power P2 (the sum of vehicle driving power P11 and electrical equipment power P 21), then, judge low pressure store
Whether the SOC value of battery is more than preset low battery threshold value.
If the SOC value of low tension battery is more than preset low battery threshold value, the SOC value variation speed of power battery is obtained
Rate, and the charge power P3 of the corresponding power battery of SOC value rate of change of power battery is inquired, to select suitable charging
Power P 3 enables the SOC value of power battery to rise, and further judges whether the charge power P3 of power battery is less than and start
The difference of optimal economic the region corresponding minimum output power Pmin and vehicle demand power P2 of machine, if so, i.e. P3 ＜ Pmin-
P2 is then generated electricity to adjust the generated output of auxiliary-motor with minimum output power Pmin by controlling engine, that is, controlled
Engine is exported in the corresponding minimum output power Pmin operations in optimal economic region, and with the corresponding minimum in optimal economic region
Power P min subtracts the power i.e. Pmin-P2 of vehicle demand power P2 to power battery charging；If not, i.e. P3 >=Pmin-P2,
Engine is then obtained in preset optimal economic region according to the sum of the charge power P3 of power battery and vehicle demand power P2
Interior output power, and generated electricity with the output power obtained to adjust the generated output of auxiliary-motor by controlling engine,
Corresponding output power is searched in the preset optimal economic region of engine, the output power of the acquisition can be power electric
The sum of the charge power P3 and vehicle demand power P2 in pond are (P2+P3 or P11+P21+P3), and control engine to obtain
Output power generates electricity.
If the SOC value of low tension battery is less than or equal to preset low battery threshold value, the SOC value for obtaining power battery becomes
Change rate, and inquires the charge power P3 of the corresponding power battery of SOC value rate of change of power battery, it is suitable to select
Charge power P3 enables the SOC value of power battery to rise, and obtains the SOC value rate of change of low tension battery, and inquires low
The charge power P4 for pressing the corresponding low tension battery of SOC value rate of change of accumulator, to select suitable charge power P4
So that the SOC value of low tension battery is increased, and further judges the charge power P4 of low tension battery and filling for power battery
Whether the sum of electrical power P 3 is less than the corresponding minimum output power Pmin in optimal economic region and vehicle demand power of engine
The difference of P2.If so, i.e. P3+P4 ＜ Pmin-P2, then by control engine with minimum output power Pmin generate electricity with
The generated output of auxiliary-motor is adjusted, that is, controls engine in the corresponding minimum output power Pmin operations in optimal economic region, and
The power i.e. Pmin-P2 of vehicle demand power P2 is subtracted to power electric with the corresponding minimum output power Pmin in optimal economic region
Pond and low tension battery charging；If not, i.e. P3+P4 >=Pmin-P2, then store according to the charge power P3 of power battery, low pressure
The sum of charge power P4 and vehicle demand power P2 of battery obtain output work of the engine in preset optimal economic region
Rate, and generated electricity with the output power obtained to adjust the generated output of auxiliary-motor by controlling engine, that is, starting
Corresponding output power is searched in the preset optimal economic region of machine, the output power of the acquisition can be the charging of power battery
The sum of power P 3, the charge power P4 of low tension battery and vehicle demand power P2 are (P2+P3+P4 or P11+P21+P3+P4),
And it controls engine and is generated electricity with the output power obtained.
In low speed, engine can be operated in economic zone as a result, and only power generation is not involved in driving, from without the use of from
Clutch reduces clutch abrasion or sliding wear, while reducing pause and transition in rhythm or melody sense, improves comfort, and reduce oil consumption, reduction is started
Machine noise, and then vehicle low speed electric equilibrium and low speed ride comfort are maintained, promote vehicle performance.
As described above, as shown in figure 8, the electricity-generating control method of the hybrid vehicle of the embodiment of the present invention includes following step
Suddenly：
S601：Obtain the vehicle velocity V of the SOC value M and hybrid vehicle of power battery.
S602：Judge whether the vehicle velocity V of hybrid vehicle is less than the first preset vehicle speed V1.
If so, thening follow the steps S603；If not, thening follow the steps S604.
S603：Judge whether the SOC value M of power battery is less than or equal to the first preset value M1.
If so, thening follow the steps S607；If not, thening follow the steps S606.
S604：Judge whether the SOC value M of power battery is less than or equal to the first preset value M1.
If so, thening follow the steps S605；If not, thening follow the steps S606.
S605：It controls engine and participates in driving.
S606：Control engine does not drive auxiliary-motor to generate electricity.
S607：Obtain the vehicle resistance F of the gas pedal depth D and hybrid vehicle of hybrid vehicle.
S608：Judge whether gas pedal depth D is more than the vehicle resistance of the first predetermined depth D1 or hybrid vehicle
Whether power F is more than the first default resistance F1 or whether the SOC value M of power battery is less than preset limiting value M2.
If so, thening follow the steps S605；If not, thening follow the steps S609.
S609：Obtain the vehicle demand power P2 of hybrid vehicle.
S610：Judge whether vehicle demand power P2 is less than or equal to the maximum allowable generated output Pmax of auxiliary-motor.
If so, thening follow the steps S611；If not, thening follow the steps S605.
S611：Control driven by engine auxiliary-motor generates electricity, and engine is not involved in driving.At this point, control auxiliary-motor
Into generated output shaping modes.
S612：Judge whether the SOC value of low tension battery is less than or equal to preset low battery threshold value.
If so, thening follow the steps S617；If not, thening follow the steps S613.
S613：The charge power P3 of power battery is obtained according to the SOC value rate of change of power battery.
S614：Judge whether the charge power P3 of power battery is defeated less than the corresponding minimum in optimal economic region of engine
Go out the difference of power P min and vehicle demand power P2.
If so, thening follow the steps S615；If not, thening follow the steps S616.
S615：It is generated electricity with minimum output power Pmin to adjust the power generation work(of auxiliary-motor by controlling engine
Rate.
S616：According to the sum of the charge power P3 of power battery and vehicle demand power P2 obtain engine it is preset most
Output power in good economic zone, and generated electricity with the output power obtained to adjust auxiliary-motor by controlling engine
Generated output.
S617：The charge power P4 of low tension battery is obtained according to the SOC value rate of change of low tension battery.
S618：The charge power P3 of power battery is obtained according to the SOC value rate of change of power battery.
S619：Judge whether the sum of the charge power P4 of low tension battery and the charge power P3 of power battery are less than to start
The difference of optimal economic the region corresponding minimum output power Pmin and vehicle demand power P2 of machine.
If so, thening follow the steps S620；If not, thening follow the steps S621.
S620：It is generated electricity with minimum output power Pmin to adjust the power generation work(of auxiliary-motor by controlling engine
Rate.
S621：According to the charge power P3 of power battery, the charge power P4 of low tension battery and vehicle demand power P2
The sum of obtain output power of the engine in preset optimal economic region, and by controlling output work of the engine to obtain
Rate generates electricity to adjust the generated output of auxiliary-motor.
To sum up, the electricity-generating control method of the hybrid vehicle proposed according to embodiments of the present invention, obtains power battery
The speed of SOC value, the SOC value of low tension battery and hybrid vehicle, and according to the SOC value of power battery and hybrid power vapour
The speed control auxiliary-motor of vehicle enters generated output shaping modes, so that engine operates in preset optimal economic region, when
After auxiliary-motor enters generated output shaping modes, the generated output of auxiliary-motor is adjusted also according to the SOC value of low tension battery
Section, into without the use of clutch, reduces clutch abrasion or sliding wear so as to make engine be not involved in driving in low speed,
Reduce pause and transition in rhythm or melody sense simultaneously, improve comfort, and engine can be made to be operated in economic zone in low speed, only generates electricity not
Driving reduces oil consumption, reduces engine noise, maintains vehicle low speed electric equilibrium and low speed ride comfort, promotes vehicle performance.
Finally, the embodiment of the present invention also proposed a kind of computer readable storage medium, has and is stored in instruction therein,
When executed, hybrid vehicle executes the electricity-generating control method of upper embodiment.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
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 embodiments or example.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.
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, changes, replacing and modification.
Claims (24)
1. a kind of dynamical system of hybrid vehicle, which is characterized in that including：
Engine, the engine output power to the first wheel of the hybrid vehicle by clutch；
Power motor, the power motor are used to output driving force to the second wheel of the hybrid vehicle；
Power battery, the power battery are used to power to the power motor；
DC-DC converter；
Low tension battery, the low tension battery are connected with the DC-DC converter；
The auxiliary-motor being connected with the engine, the auxiliary-motor respectively with the power motor, the DC-DC converter and dynamic
Power battery is connected, and the auxiliary-motor generates electricity under the drive of the engine；
Control module, the control module for obtain the SOC value of the power battery and the speed of the hybrid vehicle,
The SOC value of the low tension battery, and institute is controlled according to the SOC value of the power battery and the speed of the hybrid vehicle
It states auxiliary-motor and enters generated output shaping modes, so that the engine operates in preset optimal economic region, wherein work as institute
It states after auxiliary-motor enters generated output shaping modes, the control module is additionally operable to the SOC value pair according to the low tension battery
The generated output of the auxiliary-motor is adjusted.
2. the dynamical system of hybrid vehicle as described in claim 1, which is characterized in that the control module is used for：When
When the SOC value of the power battery is more than preset limiting value and is less than or equal to the first preset value, if the hybrid power vapour
The speed of vehicle is less than the first preset vehicle speed, controls the auxiliary-motor and enters the generated output shaping modes.
3. the dynamical system of hybrid vehicle as claimed in claim 2, which is characterized in that the control module is additionally operable to：
When the SOC value of the power battery is more than preset limiting value and is less than or equal to the first preset value and the hybrid power vapour
When the speed of vehicle is less than the first preset vehicle speed, the vehicle demand power of the hybrid vehicle is obtained, and need in the vehicle
When power being asked to be less than or equal to the maximum allowable generated output of the auxiliary-motor, controls the auxiliary-motor and enter the generated output tune
Section pattern.
4. the dynamical system of hybrid vehicle as claimed in claim 3, which is characterized in that the control module is additionally operable to：
When the SOC value of the power battery is more than preset limiting value and less than or equal to the first preset value, the hybrid vehicle
Speed is less than the first preset vehicle speed and the vehicle demand power is less than or equal to the maximum allowable generated output of the auxiliary-motor
When, the gas pedal depth of the hybrid vehicle and the vehicle resistance of the hybrid vehicle are obtained, and in the oil
Door tread depths are less than or equal to the first predetermined depth and the vehicle resistance of the hybrid vehicle is less than or equal to the first pre- handicapping
When power, controls the auxiliary-motor and enter the generated output shaping modes.
5. the dynamical system of the hybrid vehicle as described in any one of claim 1-4, which is characterized in that the control mould
Block is additionally operable to：After the auxiliary-motor enters the generated output shaping modes, according to the vehicle need of the hybrid vehicle
Seek the SOC value of power, the charge power of the charge power of the power battery and the low tension battery, the low tension battery
The generated output of the auxiliary-motor is adjusted.
6. the dynamical system of hybrid vehicle as claimed in claim 5, which is characterized in that according to the hybrid vehicle
Vehicle demand power, the charge power of the power battery and the charge power of the low tension battery adjust the auxiliary-motor
Generated output formula it is as follows：
P1=P2+P3+P4, wherein P2=P11+P21,
P1 is the generated output of the auxiliary-motor, and P2 is vehicle demand power, and P3 is the charge power of power battery, and P4 is low pressure
The charge power of accumulator, P11 are vehicle driving power, and P21 is electrical equipment power.
7. the dynamical system of hybrid vehicle as claimed in claim 6, which is characterized in that the control module is additionally operable to：
The SOC value rate of change of the power battery is obtained, and according to the optimal economic of the vehicle demand power and the engine
The SOC value rate of change of relationship and the power battery between the corresponding minimum output power in region, the low pressure electric power storage
The SOC value in pond, the low tension battery SOC value rate of change adjust the generated output of the auxiliary-motor.
8. the dynamical system of hybrid vehicle as claimed in claim 7, which is characterized in that the control module is additionally operable to：
When the SOC value of the low tension battery is more than preset low battery threshold value, according to the SOC value rate of change of the power battery
The charge power of the power battery is obtained, and judges whether the charge power of the power battery is less than the engine most
The difference of good economic zone corresponding minimum output power and the vehicle demand power, wherein
If the charge power of the power battery is less than the corresponding minimum output power in optimal economic region of the engine
And the difference of the vehicle demand power is then generated electricity with the minimum output power with described in adjusting by controlling the engine
The generated output of auxiliary-motor；
If the charge power of the power battery is more than or equal to the corresponding minimum output in optimal economic region of the engine
The difference of power and the vehicle demand power, then according to the sum of the charge power of the power battery and the vehicle demand power
Output power of the engine in preset optimal economic region is obtained, and defeated with what is obtained by controlling the engine
Go out power to generate electricity to adjust the generated output of the auxiliary-motor.
9. the dynamical system of hybrid vehicle as claimed in claim 7, which is characterized in that the control module is additionally operable to：
When the SOC value of the low tension battery is less than or equal to preset low battery threshold value, the SOC value variation of the A-battery is obtained
The SOC value rate of change of rate and the power battery, and according to described in the acquisition of the SOC value rate of change of the low tension battery
The charge power of low tension battery and the charging work(that the power battery is obtained according to the SOC value rate of change of the power battery
Rate, and judge whether the sum of the charge power of the low tension battery and the charge power of the power battery are less than the hair
The difference of the corresponding minimum output power in optimal economic region and the vehicle demand power of motivation, wherein
If the sum of the charge power of the low tension battery and the charge power of the power battery are less than the engine
The difference of the corresponding minimum output power in optimal economic region and the vehicle demand power, then by controlling the engine with this
Minimum output power generates electricity to adjust the generated output of the auxiliary-motor；
If the sum of the charge power of the low tension battery and the charge power of the power battery are more than or equal to described start
The difference of the corresponding minimum output power in optimal economic region and the vehicle demand power of machine, then according to the power battery
Charge power, the low tension battery the sum of charge power and the vehicle demand power obtain the engine preset
Output power in optimal economic region, and generated electricity with the output power obtained to adjust by controlling the engine
The generated output of the auxiliary-motor.
10. the dynamical system of hybrid vehicle as claimed in claim 7, which is characterized in that the control module is additionally operable to：
When the vehicle demand power is more than the maximum allowable generated output of the auxiliary-motor, also controls the engine and participate in driving
So that the engine outputs power to the wheel by the clutch.
11. the dynamical system of hybrid vehicle as claimed in claim 4, which is characterized in that the control module is additionally operable to：
When the SOC value of the power battery is less than or equal to preset limiting value, controls the engine and participate in driving so that the hair
Motivation outputs power to the wheel by the clutch；
When the SOC value of the power battery is less than or equal to the first preset value, the speed of the hybrid vehicle is less than first in advance
If speed and the gas pedal depth are more than the first predetermined depth, control the engine and participate in driving so that described start
Machine outputs power to the wheel by the clutch；
When the SOC value of the power battery is less than or equal to the first preset value, the speed of the hybrid vehicle is less than first in advance
If the vehicle resistance of speed and the hybrid vehicle is more than the first default resistance, the engine participates in driving so that institute
It states engine and the wheel is output power to by the clutch.
12. a kind of hybrid vehicle, which is characterized in that include the hybrid power vapour as described in any one of claim 1-11
The dynamical system of vehicle.
13. a kind of electricity-generating control method of hybrid vehicle, which is characterized in that the dynamical system packet of the hybrid vehicle
Engine, power motor, power battery, DC-DC converter, the auxiliary-motor being connected with the engine and the DC-DC is included to become
The connected low tension battery of parallel operation, the engine output power to the first vehicle of the hybrid vehicle by clutch
Wheel, the power motor are used to output driving force to the second wheel of the hybrid vehicle, and the power battery is for giving
The power motor power supply, the auxiliary-motor are connected with the power motor, the DC-DC converter and power battery respectively,
The auxiliary-motor generates electricity under the drive of the engine, and the electricity-generating control method includes the following steps：
Obtain the SOC value of the power battery and the speed of the hybrid vehicle, the SOC value of the low tension battery；
The auxiliary-motor, which is controlled, according to the SOC value of the power battery and the speed of the hybrid vehicle enters generated output
Shaping modes, so that the engine operates in preset optimal economic region；
After the auxiliary-motor enters generated output shaping modes, according to the SOC value of the low tension battery to the auxiliary-motor
Generated output be adjusted.
14. the electricity-generating control method of hybrid vehicle as claimed in claim 13, which is characterized in that when the power battery
SOC value be more than preset limiting value and less than or equal to the first preset value when, if the speed of the hybrid vehicle is less than
First preset vehicle speed then controls the auxiliary-motor and enters the generated output shaping modes.
15. the electricity-generating control method of hybrid vehicle as claimed in claim 14, which is characterized in that when the power battery
SOC value be more than preset limiting value and be less than the less than or equal to the speed of the first preset value and the hybrid vehicle
When one preset vehicle speed, also obtain the vehicle demand power of the hybrid vehicle, and be less than in the vehicle demand power etc.
When the maximum allowable generated output of the auxiliary-motor, controls the auxiliary-motor and enter the generated output shaping modes.
16. the electricity-generating control method of hybrid vehicle as claimed in claim 15, which is characterized in that when the power battery
SOC value be more than preset limiting value and to be less than first less than or equal to the speed of the first preset value, the hybrid vehicle pre-
If speed and the vehicle demand power are less than or equal to the maximum allowable generated output of the auxiliary-motor, also obtain described mixed
The vehicle resistance of the gas pedal depth and the hybrid vehicle of power vehicle is closed, and is less than in the gas pedal depth
When being less than or equal to the first default resistance equal to the vehicle resistance of the first predetermined depth and the hybrid vehicle, the pair is controlled
Motor enters the generated output shaping modes.
17. the electricity-generating control method of the hybrid vehicle as described in any one of claim 13-16, which is characterized in that when
After the auxiliary-motor enters the generated output shaping modes, according to the vehicle demand power of the hybrid vehicle, described
The charge power of the charge power of power battery and the low tension battery, the SOC value of the low tension battery are electric to the pair
The generated output of machine is adjusted.
18. the electricity-generating control method of hybrid vehicle as claimed in claim 17, which is characterized in that dynamic according to the mixing
Described in the charge power of the vehicle demand power of power automobile, the charge power of the power battery and the low tension battery is adjusted
The formula of the generated output of auxiliary-motor is as follows：
P1=P2+P3+P4, wherein P2=P11+P21,
P1 is the generated output of the auxiliary-motor, and P2 is vehicle demand power, and P3 is the charge power of power battery, and P4 is low pressure
The charge power of accumulator, P11 are vehicle driving power, and P21 is electrical equipment power.
19. the electricity-generating control method of hybrid vehicle as claimed in claim 18, which is characterized in that the auxiliary-motor
Generated output is adjusted, including：
Obtain the SOC value rate of change of the power battery, and according to the best of the vehicle demand power and the engine
The SOC value rate of change of relationship and the power battery between the corresponding minimum output power in economic zone, the low pressure
The SOC value of accumulator, the low tension battery SOC value rate of change adjust the generated output of the auxiliary-motor.
20. the electricity-generating control method of hybrid vehicle as claimed in claim 19, which is characterized in that when the low pressure electric power storage
When the SOC value in pond is more than preset low battery threshold value, the power electric is obtained according to the SOC value rate of change of the power battery
The charge power in pond, and judge whether the charge power of the power battery is less than the optimal economic region correspondence of the engine
Minimum output power and the vehicle demand power difference, wherein
If the charge power of the power battery is less than the corresponding minimum output power in optimal economic region of the engine
And the difference of the vehicle demand power is then generated electricity with the minimum output power with described in adjusting by controlling the engine
The generated output of auxiliary-motor；
If the charge power of the power battery is more than or equal to the corresponding minimum output in optimal economic region of the engine
The difference of power and the vehicle demand power, then according to the sum of the charge power of the power battery and the vehicle demand power
Output power of the engine in preset optimal economic region is obtained, and defeated with what is obtained by controlling the engine
Go out power to generate electricity to adjust the generated output of the auxiliary-motor.
21. the electricity-generating control method of hybrid vehicle as claimed in claim 19, which is characterized in that when the low pressure electric power storage
When the SOC value in pond is less than or equal to preset low battery threshold value, the SOC value rate of change of the A-battery and the power are obtained
The SOC value rate of change of battery, and filling for the low tension battery is obtained according to the SOC value rate of change of the low tension battery
Electrical power and the charge power that the power battery is obtained according to the SOC value rate of change of the power battery, and judge institute
State the best warp whether the sum of the charge power of low tension battery and the charge power of the power battery are less than the engine
The difference of Ji region corresponding minimum output power and the vehicle demand power, wherein
If the sum of the charge power of the low tension battery and the charge power of the power battery are less than the engine
The difference of the corresponding minimum output power in optimal economic region and the vehicle demand power, then by controlling the engine with this
Minimum output power generates electricity to adjust the generated output of the auxiliary-motor；
If the sum of the charge power of the low tension battery and the charge power of the power battery are more than or equal to described start
The difference of the corresponding minimum output power in optimal economic region and the vehicle demand power of machine, then according to the power battery
Charge power, the low tension battery the sum of charge power and the vehicle demand power obtain the engine preset
Output power in optimal economic region, and generated electricity with the output power obtained to adjust by controlling the engine
The generated output of the auxiliary-motor.
22. the electricity-generating control method of hybrid vehicle as claimed in claim 19, which is characterized in that when the vehicle demand
When power is more than the maximum allowable generated output of the auxiliary-motor, also controls the engine and participate in driving so that the engine
The wheel is output power to by the clutch.
23. the electricity-generating control method of hybrid vehicle as claimed in claim 16, which is characterized in that wherein,
When the SOC value of the power battery is less than or equal to preset limiting value, also control the engine participate in driving so that
The engine outputs power to the wheel by the clutch；
When the SOC value of the power battery is less than or equal to the first preset value, the speed of the hybrid vehicle is less than first in advance
If speed and the gas pedal depth are more than the first predetermined depth, also control the engine and participate in driving so that the hair
Motivation outputs power to the wheel by the clutch；
When the SOC value of the power battery is less than or equal to the first preset value, the speed of the hybrid vehicle is less than first in advance
If the vehicle resistance of speed and the hybrid vehicle is more than the first default resistance, also controls the engine and participate in driving
So that the engine outputs power to the wheel by the clutch.
24. a kind of computer readable storage medium, which is characterized in that have and be stored in instruction therein, when described instruction is held
When row, the hybrid vehicle executes the electricity-generating control method as described in any one of claim 13-23.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0946818A (en) * | 1995-07-28 | 1997-02-14 | Isuzu Ceramics Kenkyusho:Kk | Hybrid power source and its applied apparatus |
| JP2000110602A (en) * | 1998-09-30 | 2000-04-18 | Mazda Motor Corp | Hybrid automobile |
| CN1895942A (en) * | 2005-07-15 | 2007-01-17 | 中国第一汽车集团公司 | Kinetic system control for double-motor mixed-kinetic automobile |
| CN102935798A (en) * | 2012-11-21 | 2013-02-20 | 吉林大学 | Hybrid electric vehicle power system |
| CN204674363U (en) * | 2015-01-16 | 2015-09-30 | 比亚迪股份有限公司 | For vehicle power drive system and there is its vehicle |
| CN105922986A (en) * | 2016-05-24 | 2016-09-07 | 北京新能源汽车股份有限公司 | Stroke-increasing type electric automobile and mode switching control method and system thereof |
-
2017
- 2017-03-31 CN CN201710211011.8A patent/CN108656931B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0946818A (en) * | 1995-07-28 | 1997-02-14 | Isuzu Ceramics Kenkyusho:Kk | Hybrid power source and its applied apparatus |
| JP2000110602A (en) * | 1998-09-30 | 2000-04-18 | Mazda Motor Corp | Hybrid automobile |
| CN1895942A (en) * | 2005-07-15 | 2007-01-17 | 中国第一汽车集团公司 | Kinetic system control for double-motor mixed-kinetic automobile |
| CN102935798A (en) * | 2012-11-21 | 2013-02-20 | 吉林大学 | Hybrid electric vehicle power system |
| CN204674363U (en) * | 2015-01-16 | 2015-09-30 | 比亚迪股份有限公司 | For vehicle power drive system and there is its vehicle |
| CN105922986A (en) * | 2016-05-24 | 2016-09-07 | 北京新能源汽车股份有限公司 | Stroke-increasing type electric automobile and mode switching control method and system thereof |
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