CN107244319B - Hybrid vehicle start stop control device, control method and control unit - Google Patents
Hybrid vehicle start stop control device, control method and control unit Download PDFInfo
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- CN107244319B CN107244319B CN201710492516.6A CN201710492516A CN107244319B CN 107244319 B CN107244319 B CN 107244319B CN 201710492516 A CN201710492516 A CN 201710492516A CN 107244319 B CN107244319 B CN 107244319B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0677—Engine power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/086—Power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Automation & Control Theory (AREA)
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Abstract
The present invention proposes a kind of hybrid vehicle start stop control device, wherein hybrid vehicle start stop control device includes the power output for controlling motor and engine, control unit including can control engine power output, can driving motor operation lithium battery, can driving motor operation supercapacitor, and the first power sensor of power needed for detectable driving vehicle, described control unit are electrically connected with engine and the supercapacitor, described control unit is also connect with the lithium battery.The present invention can effectively ensure that engine operation power is in the optimum interval of efficiency.
Description
Technical field
The invention belongs to hybrid vehicle control technology field more particularly to a kind of hybrid vehicle start stop control device,
Using the control method of hybrid vehicle start stop control device, and for the control unit in hybrid vehicle start stop control device.
Background technique
Hybrid vehicle generally refers to hybrid vehicle, i.e. fuel (including gasoline and diesel oil etc.) and electric energy
Mixed vehicle has pure electric vehicle low emission and the high advantage of orthodox car course continuation mileage.
Chinese invention patent CN102083665B discloses a kind of internal combustion engine and dual power supply hybrid power system, by internal combustion
Machine is used in combination with battery and supercapacitor, with this compared to internal combustion engine and lithium battery or fuel battery combination, with
And internal combustion engine is combined with supercapacitor or power battery, has both compensated for lithium battery or fuel cell charge efficiency and output power
Low defect, and compensate for the low defect of supercapacitor power reservoir capacity.
However, above-mentioned internal combustion engine and dual power supply hybrid power system are due to only using dual power supply as being used for vehicle low-power
The auxiliary device of area's operation, and lack effective control to dual power supply in vehicle high power area operation process, therefore when drive
When the required power of motor-car is greater than the maximum power of engine the optimum interval of efficiency, engine operation power can not be effectively ensured and be in
The optimum interval of efficiency.
Summary of the invention
Engine operation can not be effectively ensured for existing internal combustion engine and the presence of dual power supply hybrid power system in the present invention
Power is in the technical issues of the optimum interval of efficiency, proposes that one kind can effectively ensure that engine operation power is in the optimum interval of efficiency
Hybrid vehicle start stop control device, control method and control unit.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of hybrid vehicle start stop control device, for controlling the power output of motor and engine, including controllable hair
The control unit of motivation power output, can driving motor operation lithium battery, and can driving motor operation supercapacitor；
It further include the first power sensor of power needed for detectable driving vehicle, described control unit and first power sensor
Electrical connection passes through power and engine needed for driving vehicle with the signal of power needed for obtaining driving vehicle, described control unit
The maximum power of the optimum interval of efficiency, which carries out subtracting each other processing, obtains power difference；The supercapacitor, which is connected with, can detect described surpass
Grade capacitor can be provided the second power sensor of power, and described control unit is connect with second power sensor, with
Obtaining the supercapacitor can be provided the signal of power, and the supercapacitor can be provided power by described control unit
Signal be compared with the power difference；Described control unit is electrically connected with engine and the supercapacitor, with
When the power difference is greater than zero and the supercapacitor can be provided power not less than the power difference, control
The supercapacitor drives motor, drives so that motor is combined with engine to vehicle；Described control unit
It is also connect with the lithium battery, when the power difference is greater than zero and the supercapacitor can be provided power
When less than the power difference, controls the supercapacitor and the lithium battery is combined and driven to motor, so that motor
Combine with engine and vehicle is driven.
Preferably, the control is single the invention also includes the first coulometric detector that can detect the electric quantity of lithium battery
First to be electrically connected with first coulometric detector, to obtain the electric quantity signal of the lithium battery, described control unit is by the lithium
The electricity of battery is compared with the lithium battery minimum safe remaining capacity；Described control unit is electrically connected with alarm, with
When the electricity of the lithium battery is less than the lithium battery minimum safe remaining capacity, starting alarm issues alarm signal.
Preferably, the invention also includes the second coulometric detector that can detect the supercapacitor electricity, the control
Unit processed is electrically connected with second coulometric detector, to obtain the electric quantity signal of the supercapacitor, the lithium battery with
The supercapacitor electrical connection, described control unit are connect with the lithium battery, to control the lithium battery to described super
Grade capacitor charging.
Preferably, the invention also includes the third power sensor of power needed for detectable vehicle braking, the control
Unit is electrically connected with the third power sensor, with power signal needed for obtaining vehicle braking, described control unit control
Motor brakes vehicle, while the kinetic energy of motor is converted to electric energy and is charged to the supercapacitor.
A kind of control method, using above-mentioned hybrid vehicle start stop control device, comprising the following steps:
S10: according to the working condition signal of vehicle feedback, the value c of power needed for determining driving vehicle；
S11: the value c of power needed for driving vehicle is compared with motor peak power d, if c > d, carries out step
S16~S23；
S16: the value c of power needed for driving vehicle is compared with the maximum power value f of engine the optimum interval of efficiency, if
C > f, then carry out step S21~S23；
S21: the value c of power needed for driving vehicle is subtracted each other and is obtained with the maximum power value f of engine the optimum interval of efficiency
Difference h is compared with the value e that supercapacitor can be provided power, if h≤e, step S22 is carried out, if h > by difference h
E then carries out step S23；
S22: control signal is issued, is driven with controlling supercapacitor to motor, while controlling engine and motor
Combine and vehicle is driven；
S23: issuing control signal, to control supercapacitor and lithium battery is combined and driven to motor, controls simultaneously
Engine is combined with motor drives vehicle；
Preferably, in step S16 further include: if c≤f, carry out step S17~S20；
S17: lithium battery residual electric quantity SOC1 is compared with lithium battery with reference to residual electric quantity g, if SOC1 < g,
Step S18~S19 is then carried out, if SOC1 >=g, carries out step S18 and S20；
S18: adjustment signal is issued, is in the optimum interval of efficiency with adjusting engine operation power；
S19: issuing control signal, individually driven to vehicle with controlling engine, while driving motor is lithium battery
Charging；
S20: control signal is issued, individually vehicle is driven with controlling engine.
Preferably, in step S11 further include: if c≤d, carry out step S12~S15；
S12: can be provided the signal of power according to the supercapacitor of acquisition, determine that supercapacitor can be provided power
Value e；
S13: the value e that supercapacitor can be provided power is compared with the value c of power needed for driving vehicle, if e
< c then carries out step S14, if e >=c, carries out step S15；
S14: output control signal, to control supercapacitor and lithium battery is combined and driven to motor；
S15: output control signal individually drives motor with controlling supercapacitor.
Preferably, the invention also includes following steps:
S0: according to the working condition signal of vehicle feedback, judging vehicle status, if vehicle is in driving status, carries out
Step S1~S23；
S1: according to the electric quantity of lithium battery signal of acquisition, lithium battery residual electric quantity SOC1 is determined；
S2: lithium battery residual electric quantity SOC1 is compared with lithium battery minimum safe residual electric quantity a, if SOC1 <
A then carries out step S3~S6, if SOC1 >=a, carries out step S7~S23；
S3: output alarm control signal issues alarm signal to control alarm, while asking the user whether that selection is started
Machine driving carries out step S4 if user selects "No", if user selects "Yes", carries out step S5~S6；
S4: engine power is not adjusted, while external power supply is waited to charge lithium battery；
S5: output regulation signal is in the optimum interval of efficiency with adjusting engine operation power；
S6: vehicle is operated alone to control engine, while controlling motor and charging to lithium battery in output control signal
And carry out step S2；
S7: according to the supercapacitor electricity signal of acquisition, supercapacitor residual electric quantity SOC2 is determined；
S8: by supercapacitor residual electric quantity SOC2 and supercapacitor it is preset first with reference to residual electric quantity b into
Row compares, if SOC2 < b, carries out step S9, if SOC2 >=b, carries out step S10~S23；
S9: control lithium battery charges to supercapacitor, and carries out step S8.
Preferably, step S0 further include: if vehicle is in on-position, carry out step S24~S31；
S24: according to the working condition signal of vehicle feedback, the value i of power needed for vehicle braking is determined；
S25: the value i of power needed for vehicle braking is compared with motor peak power d, if i≤d, carries out step
S26~S28, if i > d, carries out step S29~S31；
S26: by supercapacitor residual electric quantity SOC2 and supercapacitor it is preset second with reference to residual electric quantity j into
Row compares, if SOC2 < j, carries out step S27, if SOC2 >=j, carries out step S28；
S27: output control signal is individually braked vehicle with controlling motor, while converting the kinetic energy of motor to
Electric energy charges to supercapacitor；
S28: output control signal individually brakes vehicle with controlling mechanical friction component；
S29: by supercapacitor residual electric quantity SOC2 and supercapacitor it is preset second with reference to residual electric quantity j into
Row compares, if SOC2 < j, carries out step S30, if SOC2 >=j, carries out step S31；
S30: output control signal, to control motor and mechanical friction component is combined and braked to vehicle, while will be electric
The kinetic energy of machine is converted into electric energy and charges to supercapacitor；
S31: output control signal individually brakes vehicle with controlling mechanical friction component.
A kind of control unit, in above-mentioned hybrid vehicle start stop control device, comprising:
First signal processing module, for the working condition signal according to vehicle feedback, the value of power needed for determining driving vehicle
c；
Second signal processing module can be provided the signal of power for the supercapacitor according to acquisition, determine super
Capacitor can be provided the value e of power；
First comparison module, the value c for power needed for driving vehicle is compared with motor peak power d, if c >
D then triggers the second comparison module；
Second comparison module, for the value c of power needed for driving vehicle and the maximum power of engine the optimum interval of efficiency
Value f is compared, if c > f, triggers third signal processing module；
Third signal processing module, for the value c of power needed for driving vehicle and the maximum of engine the optimum interval of efficiency
Performance number f subtracts each other and obtains difference h；
Third comparison module, for difference h to be compared with the value e that supercapacitor can be provided power, if h≤e,
The first control module is then triggered, triggers the second control module if h > e；
First control module is driven with controlling supercapacitor to motor, is controlled simultaneously for issuing control signal
Engine is combined with motor drives vehicle；
Second control module is combined with controlling supercapacitor and lithium battery to motor progress for issuing control signal
Driving, while controlling engine and combine with motor and vehicle is driven.
Compared with prior art, the advantages and positive effects of the present invention are:
1, hybrid vehicle start stop control device of the present invention passes through the setting described control unit, lithium battery, described super
Capacitor, first power sensor and second power sensor, and setting described control unit and lithium electricity
On the one hand the connection relationship of pond and the supercapacitor makes the lithium battery and the supercapacitor according to driving vehicle institute
It needs the variation of power constantly to adjust power output mode in the most efficient manner, and then applies electric energy efficiently；It is another
The difference of the optimum interval of efficiency power of aspect, power needed for capable of constantly grasping driving vehicle and engine, and in vehicle height
The lithium battery and the supercapacitor can efficiently be controlled in power area operation process, thus when driving vehicle
When required power is greater than the maximum power of engine the optimum interval of efficiency, it can effectively ensure that engine operation power is in best
Efficiency area, and then improve the service life of engine and the fuel economy of vehicle.
2, control method of the present invention is by setting steps S21~S23, can the power needed for drive vehicle greater than engine
When the maximum power value of the optimum interval of efficiency, the optimum interval of efficiency power of power and engine needed for capable of constantly grasping driving vehicle
Between difference, and reasonable distribution is carried out to the output of electric energy according to the size of supercapacitor output power, thus guaranteeing
While electric energy obtains efficient application, maximum power value needed for effectively reducing engine operation has been effectively ensured and has started
Machine operating power is in the optimum interval of efficiency, and then substantially increases the service life of engine and the fuel-economy of vehicle
Property.
3, the present invention passes through the first signal processing module of setting, second signal processing module, third signal processing module, the
One comparison module, the second comparison module, third comparison module, the first control module and the second control module, can be in driving vehicle
When required power is greater than the maximum power value of engine the optimum interval of efficiency, power needed for capable of constantly grasping driving vehicle and hair
Difference between the optimum interval of efficiency power of motivation, and the output of electric energy is carried out according to the size of supercapacitor output power
Reasonable distribution, thus while guaranteeing that electric energy obtains efficient application, maximum power needed for effectively reducing engine operation
Value, that is, be effectively ensured engine operation power and be in the optimum interval of efficiency, and then substantially increased the service life of engine
And the fuel economy of vehicle.
Detailed description of the invention
Fig. 1 is the relevant electrical block diagram of hardware of the embodiment of the present invention；
Fig. 2 is workflow schematic diagram of the embodiment of the present invention；
Fig. 3 is control unit internal module control principle schematic diagram in the embodiment of the present invention；
In above each figure: 1, control unit；2, lithium battery；3, supercapacitor；4, the first power sensor；5, the second function
Rate sensor；6, the first coulometric detector；7, the second coulometric detector；8, alarm；9, third power sensor.
Specific embodiment
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one
In the case where step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments
In.
In the description of the present invention, it should be understood that (1) present invention is used only for making hair of the invention using lithium battery
Bright point is clearly described, and is not construed as the restriction to power supply model, i.e., due to be likewise supplied with power reservoir capacity it is high and
Charge efficiency and the low characteristic of output power, therefore lithium battery of the present invention both could alternatively be nickel-metal hydride battery and plumbic acid stores
Other batteries such as battery, and could alternatively be fuel cell；(2) " vehicle high power area " of the present invention, which refers to, is greater than electricity
The power bracket of machine peak value, " vehicle low-power area " refer to the power bracket less than motor peak value；(3) term " first ", "
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As shown in Figure 1, a kind of hybrid vehicle start stop control device is wrapped for controlling the power output of motor and engine
Include the control unit 1 of controllable engine power output, can driving motor operation lithium battery 2, and can driving motor operation
Supercapacitor 3；Described control unit 1 is electrically connected with the first power sensor 4, when first power sensor 4 is used for
When detection driving vehicle needed for power, it is well known that power needed for driving vehicle is with going up a slope and the road conditions such as descending, Yi Jisui
The variation of vehicle load and change, while first power sensor 4 can pass through measurement driving vehicle needed for torque
Or vehicle revolving speed come measure driving vehicle needed for power；Described control unit 1 be electrically connected with first power sensor 4 with
The signal of power needed for obtaining driving vehicle, then 1 by power needed for drive vehicle with engine the optimum interval of efficiency most
It is high-power carry out subtracting each other processing obtain power difference；The supercapacitor 3, which is connected with, can detect 3 energy of the supercapacitor
There is provided power the second power sensor 5, it is well known that the second power sensor 5 can by calorimetry, thermo-electrical resistance measuring method and
Photometer measuring method measures power；Described control unit 1 is electrically connected with second power sensor 5, to obtain the super electricity
Container 3 can be provided the signal of power, and the supercapacitor 3 then can be provided to the signal and the power difference of power
It is compared；
Further, described control unit 1 is electrically connected with engine and the supercapacitor 3, to work as the difference power
Value controls the super capacitor greater than zero and when the supercapacitor 3 can be provided power not less than the power difference
Device 3 drives motor, drives so that motor is combined with engine to vehicle, i.e., defeated by the supercapacitor 3
The difference that the power needed for driving vehicle of power compensation out generates due to being greater than the maximum power of engine the optimum interval of efficiency, in turn
It is maintained at engine operation power in the optimum interval of efficiency；
Meanwhile described control unit 1 is also electrically connected with the lithium battery 2, to work as the power difference greater than zero, and
When the supercapacitor 3 can be provided power less than the power difference, the supercapacitor 3 and the lithium battery are controlled
2 combine and drive to motor, drive so that motor is combined with engine to vehicle；Pass through the supercapacitor 3
And the power compensation that the lithium battery 2 exports jointly is because power needed for driving vehicle is greater than the maximum work of engine the optimum interval of efficiency
Rate and the difference generated, and then it is maintained at engine operation power in the optimum interval of efficiency.
Hybrid vehicle start stop control device of the present invention passes through the setting described control unit 1, lithium battery 2, described super
Capacitor 3, first power sensor 4 and second power sensor 5, and setting described control unit 1 with it is described
On the one hand the connection relationship of lithium battery 2 and the supercapacitor 3 makes the lithium battery 2 and the supercapacitor 3 according to drive
The variation of the required power of motor-car constantly adjusts power output mode in the most efficient manner, and then answers electric energy efficiently
With；On the other hand, the difference of the optimum interval of efficiency power of power needed for capable of constantly grasping driving vehicle and engine, and
The lithium battery 2 and the supercapacitor 3 can efficiently be controlled in vehicle high power area operation process, thus
When the power needed for driving vehicle is greater than the maximum power of engine the optimum interval of efficiency, engine operation power can effectively ensure that
In the optimum interval of efficiency, and then improve the service life of engine and the fuel economy of vehicle.
Further, in order to guarantee the effective supply of electric energy, as shown in Figure 1, hybrid vehicle start stop control device of the present invention is also
The first coulometric detector 6 including can detect 2 electricity of lithium battery, it is well known that first coulometric detector 6 can lead to
The conventional methods such as Ah counting method and voltage Method and Open are crossed to detect the electricity (i.e. SOC value) of lithium battery 2；The control is single
Member 1 is electrically connected with first coulometric detector 6, and to obtain the electric quantity signal of the lithium battery 2, described control unit 1 is by institute
The electricity for stating lithium battery 2 is compared with the 2 minimum safe remaining capacity of lithium battery；Described control unit 1 is electrically connected with report
Alert device 8, with when the electricity of the lithium battery 2 is less than the 2 minimum safe remaining capacity of lithium battery, starting alarm 8 is sent out
Alarm signal out.The present invention is realized by the way that first coulometric detector 6 and alarm 8 is arranged to 2 electricity of lithium battery
It constantly monitors, while reminding driver to charge the lithium battery 2 when electric quantity of lithium battery is lower than safe remaining capacity,
To which the effective supply of electric energy in vehicle travel process be effectively ensured, and then it is greater than engine in the power needed for driving vehicle
When the maximum power of the optimum interval of efficiency, effective output of 3 power of the lithium battery 2 and/or supercapacitor ensure that.
In addition, in order to further ensure the effective supply of electric energy, as shown in Figure 1, hybrid vehicle of the present invention control dress
Setting further includes the second coulometric detector 7 that can detect 3 electricity of supercapacitor, described control unit 1 and second electricity
Amount detector 7 is electrically connected, to obtain the electric quantity signal of the supercapacitor 3, the lithium battery 2 and the supercapacitor 3
Electrical connection, described control unit 1 are electrically connected with the lithium battery 2, are filled with controlling the lithium battery 2 to the supercapacitor 3
Electricity.The present invention can constantly monitor the electricity of the supercapacitor 3 by setting second coulometric detector 7,
And it charges when the electricity of supercapacitor 3 is lower, controlling the lithium battery 2 to the supercapacitor 3, thus
The effective supply of electric energy in vehicle travel process has been effectively ensured, and then ensure that the effective defeated of 3 power of supercapacitor
Out.
In addition, as shown in Figure 1, hybrid vehicle start stop control device of the present invention further includes power needed for detectable vehicle braking
Third power sensor 9, described control unit 1 is electrically connected with the third power sensor 9, to obtain needed for vehicle braking
Power signal, described control unit 1 controls motor and brakes to vehicle, while the kinetic energy of motor is converted to electric energy to institute
Supercapacitor 3 is stated to charge.The present invention realizes the mistake in vehicle braking by the way that the third power sensor 9 is arranged
Power needed for vehicle braking is constantly monitored in journey, and when the electricity of the supercapacitor 3 is told somebody what one's real intentions are, it is single by control
Member 1 controls motor and charges to the supercapacitor 3, to further ensure the effective of electric energy in vehicle travel process
Supply.
The embodiment of the present invention also provides a kind of control method, using above-mentioned hybrid vehicle start stop control device, referring to figure
2, method includes the following steps:
S0: according to the working condition signal of vehicle feedback, judging vehicle status, if vehicle is in driving status, carries out
Step S1~S23 carries out step S24~S31 if vehicle is in on-position；
S1: according to the electric quantity of lithium battery signal of acquisition, lithium battery residual electric quantity SOC1 is determined；
S2: lithium battery residual electric quantity SOC1 is compared with lithium battery minimum safe residual electric quantity a, if SOC1 <
A then carries out step S3~S6, if SOC1 >=a, carries out step S7~S23；
S3: output alarm control signal issues alarm signal to control alarm, while asking the user whether that selection is started
Machine driving carries out step S4 if user selects "No", if user selects "Yes", carries out step S5~S6；
S4: engine power is not adjusted, while external power supply is waited to charge lithium battery；
S5: output regulation signal is in the optimum interval of efficiency with adjusting engine operation power；
S6: vehicle is operated alone to control engine, while controlling motor and charging to lithium battery in output control signal
And carry out step S2；
S7: according to the supercapacitor electricity signal of acquisition, supercapacitor residual electric quantity SOC2 is determined；
S8: by supercapacitor residual electric quantity SOC2 and supercapacitor it is preset first with reference to residual electric quantity b into
Row compares, if SOC2 < b, carries out step S9, if SOC2 >=b, carries out step S10~S23；
S9: control lithium battery charges to supercapacitor, and carries out step S8.
S10: according to the working condition signal of vehicle feedback, the value c of power needed for determining driving vehicle；
S11: the value c of power needed for driving vehicle is compared with motor peak power d, if c > d, carries out step
S16~S23 carries out step S12~S15 if c≤d；
S12: can be provided the signal of power according to the supercapacitor of acquisition, determine that supercapacitor can be provided power
Value e；
S13: the value e that supercapacitor can be provided power is compared with the value c of power needed for driving vehicle, if e
< c then carries out step S14, if e >=c, carries out step S15；
S14: output control signal, to control supercapacitor and lithium battery is combined and driven to motor；
S15: output control signal individually drives motor with controlling supercapacitor.
S16: the value c of power needed for driving vehicle is compared with the maximum power value f of engine the optimum interval of efficiency, if
C > f, then carry out step S21~S23, if c≤f, carries out step S17~S20；
S17: lithium battery residual electric quantity SOC1 is compared with lithium battery with reference to residual electric quantity g, if SOC1 < g,
Step S18~S19 is then carried out, if SOC1 >=g, carries out step S18 and S20；
S18: adjustment signal is issued, is in the optimum interval of efficiency with adjusting engine operation power；
S19: issuing control signal, individually driven to vehicle with controlling engine, while driving motor is lithium battery
Charging；
S20: control signal is issued, individually vehicle is driven with controlling engine.
S21: the value c of power needed for driving vehicle is subtracted each other and is obtained with the maximum power value f of engine the optimum interval of efficiency
Difference h is compared with the value e that supercapacitor can be provided power, if h≤e, step S22 is carried out, if h > by difference h
E then carries out step S23；
S22: control signal is issued, is driven with controlling supercapacitor to motor, while controlling engine and motor
Combine and vehicle is driven；
S23: issuing control signal, to control supercapacitor and lithium battery is combined and driven to motor, controls simultaneously
Engine is combined with motor drives vehicle；
S24: according to the working condition signal of vehicle feedback, the value i of power needed for vehicle braking is determined；
S25: the value i of power needed for vehicle braking is compared with motor peak power d, if i≤d, carries out step
S26~S28, if i > d, carries out step S29~S31；
S26: by supercapacitor residual electric quantity SOC2 and supercapacitor it is preset second with reference to residual electric quantity j into
Row compares, if SOC2 < j, carries out step S27, if SOC2 >=j, carries out step S28；
S27: output control signal is individually braked vehicle with controlling motor, while converting the kinetic energy of motor to
Electric energy charges to supercapacitor；
S28: output control signal individually brakes vehicle with controlling mechanical friction component；
S29: by supercapacitor residual electric quantity SOC2 and supercapacitor it is preset second with reference to residual electric quantity j into
Row compares, if SOC2 < j, carries out step S30, if SOC2 >=j, carries out step S31；
S30: output control signal, to control motor and mechanical friction component is combined and braked to vehicle, while will be electric
The kinetic energy of machine is converted into electric energy and charges to supercapacitor；
S31: output control signal individually brakes vehicle with controlling mechanical friction component.
It should be noted that above-mentioned lithium battery minimum safe remaining capacity size a is that basis is actually subjected to vehicle operation
Initial value pre-set in control unit is sought, it can be for 0.3 (i.e. remaining capacity account for total electricity 30%)；Similarly,
Above-mentioned supercapacitor preset first is default with reference to residual electric quantity g and supercapacitor with reference to residual electric quantity b, lithium battery
Second successively may be configured as 0.8,0.9 and 0.9 with reference to residual electric quantity j.In addition, motor peak power d and engine are best
The maximum power value f of efficiency area belongs to known parameters pre-set in a control unit.
The above-mentioned control method of the present invention by setting steps S21~S23, can the power needed for drive vehicle greater than starting
When the maximum power value of machine the optimum interval of efficiency, the optimum interval of efficiency function of power and engine needed for capable of constantly grasping driving vehicle
Difference between rate, and reasonable distribution is carried out to the output of electric energy according to the size of supercapacitor output power, thus protecting
While card electric energy obtains efficient application, hair has been effectively ensured in maximum power value needed for effectively reducing engine operation
Motivation operating power is in the optimum interval of efficiency, and then substantially increases the service life of engine and the fuel-economy of vehicle
Property.
The above-mentioned control method of the present invention by setting steps S11~S15, can the power needed for driving vehicle be in low function
When rate area, reasonable distribution is carried out to the output of electric energy according to the size of supercapacitor output power, thus ensure that vehicle
In the case where the driving of pure electric vehicle, super capacitor and/or lithium battery on the one hand can be controlled in the state of most energy saving to motor
It is driven, on the other hand, improves the range in vehicle low-power area, that is, increase vehicle low-power area maximum power value, from
And the minimal power values of engine when the power needed for driving vehicle is in high power area are improved, further ensure engine
Power is in the optimum interval of efficiency when work.
The above-mentioned control method of the present invention, can by setting steps S0~S9, step S16~S20 and step S24~S31
The electricity of lithium battery and supercapacitor is constantly monitored in the state of vehicle driving, and in the case where electricity is low to lithium electricity
Pond and supercapacitor charge, while the constantly electricity of monitoring super capacitor in the state of vehicle braking, and
It is charged by controlling motor to supercapacitor in the case that supercapacitor electricity is low, to be effectively ensured in vehicle
The effective supply of electric energy during traveling, and then ensure that effective output of lithium battery and/or supercapacitor power, that is, it protects
Motor can effectively be controlled according to actual requirement by having demonstrate,proved lithium battery and/or supercapacitor during vehicle driving
System.
The embodiment of the present invention also provides a kind of control unit, is used in above-mentioned hybrid vehicle start stop control device, such as Fig. 3 institute
Show, wherein arrow direction is the direction of signal transmitting, which includes:
First signal processing module, for the working condition signal according to vehicle feedback, the value of power needed for determining driving vehicle
c；
Second signal processing module can be provided the signal of power for the supercapacitor according to acquisition, determine super
Capacitor can be provided the value e of power；
First comparison module, the value c for power needed for driving vehicle is compared with motor peak power d, if c >
D then triggers the second comparison module；
Second comparison module, for the value c of power needed for driving vehicle and the maximum power of engine the optimum interval of efficiency
Value f is compared, if c > f, triggers third signal processing module；
Third signal processing module, for the value c of power needed for driving vehicle and the maximum of engine the optimum interval of efficiency
Performance number f subtracts each other and obtains difference h；
Third comparison module, for difference h to be compared with the value e that supercapacitor can be provided power, if h≤e,
The first control module is then triggered, triggers the second control module if h > e；
First control module is driven with controlling supercapacitor to motor, is controlled simultaneously for issuing control signal
Engine is combined with motor drives vehicle；
Second control module is combined with controlling supercapacitor and lithium battery to motor progress for issuing control signal
Driving, while controlling engine and combine with motor and vehicle is driven.
The present invention passes through setting the first signal processing module, second signal processing module, third signal processing module, first
Comparison module, the second comparison module, third comparison module, the first control module and the second control module, can be in driving vehicle
When required power is greater than the maximum power value of engine the optimum interval of efficiency, it can constantly grasp power needed for driving vehicle and start
Difference between the optimum interval of efficiency power of machine, and the output of electric energy is closed according to the size of supercapacitor output power
Reason distribution, thus while guaranteeing that electric energy obtains efficient application, maximum power value needed for effectively reducing engine operation,
Engine operation power has been effectively ensured to be in the optimum interval of efficiency, so substantially increase engine service life and
The fuel economy of vehicle.
Claims (6)
1. a kind of control method of hybrid vehicle start stop control device, it is characterised in that: the following steps are included:
S10: according to the working condition signal of vehicle feedback, the value c of power needed for determining driving vehicle；
S11: the value c of power needed for driving vehicle is compared with motor peak power d, if c > d, carry out step S16~
S23；
S16: the value c of power needed for driving vehicle is compared with the maximum power value f of engine the optimum interval of efficiency, if c >
F then carries out step S21~S23；
S21: the value c of the power and maximum power value f of engine the optimum interval of efficiency needed for driving vehicle is subtracted each other and obtains difference
Difference h is compared with the value e that supercapacitor can be provided power, if h≤e, carries out step S22 by h, if h > e,
Carry out step S23；
S22: control signal is issued, is driven with controlling supercapacitor to motor, while controlling engine and combining with motor
Vehicle is driven；
S23: issuing control signal, and to control supercapacitor and lithium battery is combined and driven to motor, while control is started
Machine is combined with motor drives vehicle.
2. control method according to claim 1, it is characterised in that: in step S16 further include: if c≤f, walked
Rapid S17~S20；
S17: lithium battery residual electric quantity SOC1 is compared with lithium battery with reference to residual electric quantity g, if SOC1 < g, into
Row step S18~S19 carries out step S18 and S20 if SOC1 >=g；
S18: adjustment signal is issued, is in the optimum interval of efficiency with adjusting engine operation power；
S19: issuing control signal, individually driven to vehicle with controlling engine, while driving motor is lithium battery charging；
S20: control signal is issued, individually vehicle is driven with controlling engine.
3. control method according to claim 2, it is characterised in that: in step S11 further include: if c≤d, walked
Rapid S12~S15；
S12: can be provided the signal of power according to the supercapacitor of acquisition, determine that supercapacitor can be provided the value of power
e；
S13: the value e that supercapacitor can be provided power is compared with the value c of power needed for driving vehicle, if e < c,
Step S14 is then carried out, if e >=c, carries out step S15；
S14: output control signal, to control supercapacitor and lithium battery is combined and driven to motor；
S15: output control signal individually drives motor with controlling supercapacitor.
4. control method according to claim 3, it is characterised in that: further comprising the steps of:
S0: according to the working condition signal of vehicle feedback, judging vehicle status, if vehicle is in driving status, carries out step
S1~S23；
S1: according to the electric quantity of lithium battery signal of acquisition, lithium battery residual electric quantity SOC1 is determined；
S2: lithium battery residual electric quantity SOC1 is compared with lithium battery minimum safe residual electric quantity a, if SOC1 < a,
It carries out step S3~S6 and carries out step S7~S23 if SOC1 >=a；
S3: output alarm control signal issues alarm signal to control alarm, while asking the user whether that selection engine drives
It is dynamic, if user selects "No", step S4 is carried out, if user selects "Yes", carries out step S5~S6；
S4: engine power is not adjusted, while external power supply is waited to charge lithium battery；
S5: output regulation signal is in the optimum interval of efficiency with adjusting engine operation power；
S6: output control signal, vehicle is operated alone to control engine, at the same control motor to lithium battery carry out charging go forward side by side
Row step S2；
S7: according to the supercapacitor electricity signal of acquisition, supercapacitor residual electric quantity SOC2 is determined；
S8: supercapacitor residual electric quantity SOC2 and supercapacitor preset first are compared with reference to residual electric quantity b
Compared with if SOC2 >=b, carrying out step S10~S23 if SOC2 < b, carries out step S9；
S9: control lithium battery charges to supercapacitor, and carries out step S8.
5. control method according to claim 4, it is characterised in that: step S0 further include: if vehicle is in on-position,
Then carry out step S24~S31；
S24: according to the working condition signal of vehicle feedback, the value i of power needed for vehicle braking is determined；
S25: the value i of power needed for vehicle braking is compared with motor peak power d, if i≤d, carry out step S26~
S28, if i > d, carries out step S29~S31；
S26: supercapacitor residual electric quantity SOC2 and supercapacitor preset second are compared with reference to residual electric quantity j
Compared with if SOC2 >=j, carrying out step S28 if SOC2 < j, carries out step S27；
S27: output control signal is individually braked vehicle with controlling motor, while converting electric energy for the kinetic energy of motor
It charges to supercapacitor；
S28: output control signal individually brakes vehicle with controlling mechanical friction component；
S29: supercapacitor residual electric quantity SOC2 and supercapacitor preset second are compared with reference to residual electric quantity j
Compared with if SOC2 >=j, carrying out step S31 if SOC2 < j, carries out step S30；
S30: output control signal, to control motor and mechanical friction component is combined and braked to vehicle, while by motor
Kinetic energy is converted into electric energy and charges to supercapacitor；
S31: output control signal individually brakes vehicle with controlling mechanical friction component.
6. a kind of control unit of hybrid vehicle start stop control device, it is characterised in that: include:
First signal processing module, for the working condition signal according to vehicle feedback, the value c of power needed for determining driving vehicle；
Second signal processing module can be provided the signal of power for the supercapacitor according to acquisition, determine super capacitor
Device can be provided the value e of power；
First comparison module, the value c for power needed for driving vehicle is compared with motor peak power d, if c > d,
Trigger the second comparison module；
Second comparison module, for power needed for driving vehicle value c and engine the optimum interval of efficiency maximum power value f into
Row compares, if c > f, triggers third signal processing module；
Third signal processing module, for the value c of power needed for driving vehicle and the maximum power of engine the optimum interval of efficiency
Value f subtracts each other and obtains difference h；
Third comparison module, if h≤e, is touched for difference h to be compared with the value e that supercapacitor can be provided power
The first control module is sent out, triggers the second control module if h > e；
First control module is driven, while control is started for issuing control signal with controlling supercapacitor to motor
Machine is combined with motor drives vehicle；
Second control module, for issuing control signal, to control supercapacitor and lithium battery is combined and driven to motor,
It controls engine simultaneously and combines with motor and vehicle is driven.
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| CN108248365B (en) * | 2017-12-15 | 2023-09-08 | 河南科技大学 | Hybrid gas-electric hybrid power vehicle power system and control method |
| KR20200115646A (en) * | 2018-02-09 | 2020-10-07 | 에이아이큐 하이브리드 피티와이 엘티디 | Hybrid powertrain |
| CN110329109B (en) * | 2019-07-17 | 2021-07-02 | 武汉格罗夫氢能汽车有限公司 | Control method of fuel cell hydrogen energy automobile energy management system |
| CN112161742B (en) * | 2020-09-30 | 2022-09-23 | 潍柴动力股份有限公司 | Power sensor detection method, device, equipment and storage medium |
| CN113547908B (en) * | 2021-09-03 | 2023-07-25 | 易事特集团股份有限公司 | Hybrid power system and control method thereof |
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