CN107302241A - DC-DC converter control method and device - Google Patents
DC-DC converter control method and device Download PDFInfo
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- CN107302241A CN107302241A CN201610236376.1A CN201610236376A CN107302241A CN 107302241 A CN107302241 A CN 107302241A CN 201610236376 A CN201610236376 A CN 201610236376A CN 107302241 A CN107302241 A CN 107302241A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/24—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed with main controller driven by a servomotor
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A kind of DC-DC converter control method and device, the control method includes：When detect there are synchronous variable-speed duty requirements by the battery-powered motor of high-tension electricity when, the time required to calculating the motor synchronous variable-speed；When exceeding preset duration the time required to synchronous variable-speed is detected, if performing downshift operation, the power of consumption needed for motor synchronous variable-speed when calculating downshift, when required consumption power, which is more than high-tension battery, to use discharge power, control reduction comes from low-pressure system and the power of the high-tension battery is used, and reduces the charging voltage set point of DC-DC converter；If performing upshift operation, calculate charge power during synchronous variable-speed when upshifing, when the charge power, which is more than high-tension battery, to use charge power, control increase comes from low-pressure system and the power of the high-tension battery is used, and improves the charging voltage set point of DC-DC converter.Using methods described and device, DC-DC converter can be enabled to timely respond to the work requirements of motor.
Description
Technical field
The present invention relates to vehicular field, more particularly to a kind of DC-DC converter control method and device.
Background technology
Hybrid vehicle (Hybrid Vehicle) refer to driver for vehicle by it is a variety of can be while operating
The vehicle that single drive system is constituted jointly, the road horsepower of vehicle according to actual vehicle running state by
Single drive system is separately or cooperatively provided.Usually said hybrid vehicle generally refers to oily electricity mixing
Power vehicle (Hybrid Electric Vehicle, HEV), i.e., made using traditional internal combustion engine and motor
For power source.
In hybrid vehicle, the electricity consumption of equipment is generally changed by direct current inversion of direct current (DCDC) on car
Device is realized, the output voltage of high-tension battery is converted into 12V voltage, is that equipment is powered on car.Electricity is changed
Gear actuator and electric control clutch have been widely used on hybrid vehicle and pure electric automobile.
In the prior art, in hybrid vehicle, gear selecting operation is performed using step electric machine, used
Shift motor performs gear shift operation.When carrying out shifting operation, pass through the gear selecting of 12V power voltage supplies respectively
Motor and shift motor realize gear selecting and gearshift.Existing DC-DC converter presence can not timely respond to above-mentioned
The possibility of the power demand of the motor of 12V power voltage supplies, causes shift time to increase.
The content of the invention
Present invention solves the technical problem that how being so that the work that DC-DC converter timely responds to motor is needed
Ask.
To solve the above problems, the embodiments of the invention provide a kind of DC-DC converter control method, bag
Include：When detect there are synchronous variable-speed duty requirements by the battery-powered motor of high-tension electricity when, calculate institute
The time required to stating motor synchronous variable-speed；When exceeding default the time required to the synchronous variable-speed is detected
When long, judge whether the shift motor currently performs downshift operation；When performing downshift operation, calculate
The power of consumption needed for motor synchronous variable-speed during downshift, and can use discharge power with high-tension battery
It is compared, when required consumption power can use discharge power more than described in, control reduction comes from low pressure
System is used the power of the high-tension battery, and reduces the charging voltage setting of the DC-DC converter
Point；When performing upshift operation, charge power during synchronous variable-speed when upshifing, and and high-tension electricity are calculated
Pond can be compared with charge power, when the charge power can use charge power more than described in, control
Increase comes from low-pressure system and the power of the high-tension battery is used, and improves the DC-DC converter
Charging voltage set point.
Optionally, the DC-DC converter control method also includes：When performing downshift operation, work as institute
After the completion of stating motor synchronous variable-speed, by the lowered low-pressure system that comes to the high-tension battery
Power is supplied using the power recovered to before reducing, and by the charging of the DC-DC converter after reduction
Voltage set point resets to the initial value before reduction；When performing upshift operation, when the motor is same
After the completion of step speed, the increased power use for coming from low-pressure system to the high-tension battery is recovered
Power supply to before increasing, and by the charging voltage set point weight of the DC-DC converter after raising
It is set to the initial value before improving.
In order to solve the above technical problems, the embodiment of the present invention additionally provides another DC-DC converter control
Method, including：When detecting to be launched by motor that the DC-DC converter is powered, calculate described
Motor total low pressure and low power required when working；Required total low pressure and low power and the DCDC are changed
The current residual power of device is compared；When the current residual power for detecting the DC-DC converter is small
When required total low pressure and low power, the existing loaded power of the control reduction DC-DC converter
Use, and be the electrical machine with power supply to be launched.
Optionally, the motor powered by the DC-DC converter includes following at least one：It is automatically controlled
Clutch motor, step electric machine and shift motor.
Optionally, used in the existing loaded power of the control reduction DC-DC converter, and be institute
State after electrical machine with power supply to be launched, in addition to：Judge whether the motor action completes；Work as institute
When stating motor action completion, the load restoration extremely drop that power is used will have been reduced in the DC-DC converter
Power supply before low.
Optionally, the DC-DC converter control method also includes：Judge whether to meet DCDC conversions
Device charging voltage set point improves condition；When meeting, the DC-DC converter charging voltage is set
Point is improved.
Optionally, when the motor action is completed, in addition to：By the DCDC conversions after raising
Device charging voltage set point resets to the initial value before not improving.
Optionally, the DC-DC converter control method also includes：Powered when detecting by high-tension battery
Motor when there are synchronous variable-speed duty requirements, the time required to calculating the motor synchronous variable-speed；
When exceeding preset duration the time required to the synchronous variable-speed is detected, judge that the shift motor is currently
No execution downshift operation；When performing downshift operation, motor synchronous variable-speed institute when calculating downshift
The power that need to be consumed, and can be compared with high-tension battery with discharge power, when required consumption power is more than
It is described that control reduction comes from low-pressure system and the power of the high-tension battery is used when using discharge power,
And reduce the charging voltage set point of the DC-DC converter；When performing upshift operation, upshift is calculated
When synchronous variable-speed when charge power, and can be compared with high-tension battery with charge power, when described
When charge power can use charge power more than described in, control increase comes from low-pressure system to the high-tension electricity
The power in pond is used, and improves the charging voltage set point of the DC-DC converter.
Optionally, the DC-DC converter control method also includes：When performing downshift operation, work as institute
After the completion of stating motor synchronous variable-speed, by the lowered low-pressure system that comes to the high-tension battery
Power is supplied using the power recovered to before reducing, and by the charging of the DC-DC converter after reduction
Voltage set point resets to the initial value before reduction；When performing upshift operation, when the motor is same
After the completion of step speed, the increased power use for coming from low-pressure system to the high-tension battery is recovered
Power supply to before increasing, and by the charging voltage set point weight of the DC-DC converter after raising
It is set to the initial value before improving.
The embodiments of the invention provide a kind of DC-DC converter control device, including：Second synchronous variable-speed
, there is synchronous variable-speed operating mode by the battery-powered motor of high-tension electricity for working as to detect in time calculating unit
During demand, the time required to calculating the motor synchronous variable-speed；Gearshift judging unit, for when detection
When exceeding preset duration to synchronous variable-speed required time, judge whether the shift motor currently performs
Downshift operation；Second control unit, is used for：When performing downshift operation, driving when calculating downshift
The power of consumption needed for motor synchronous variable-speed, and can be compared with high-tension battery with discharge power, work as institute
Power need to be consumed and be more than described when can use discharge power, control reduction to come from low-pressure system to the high pressure
The power of battery is used, and reduces the charging voltage set point of the DC-DC converter；When performing upshift
During operation, charge power during synchronous variable-speed when upshifing is calculated, and charge power can be used with high-tension battery
It is compared, when the charge power can use charge power more than described in, control increase comes from low pressure
System is used the power of the high-tension battery, and improves the charging voltage setting of the DC-DC converter
Point.
Optionally, the DC-DC converter control device also includes：Second reset cell, is used for：
When performing downshift operation, after the completion of the motor synchronous variable-speed, come from low pressure by lowered
System is supplied to the power of the high-tension battery using the power recovered to before reducing, and by the institute after reduction
The charging voltage set point for stating DC-DC converter resets to the initial value before reduction；Performing upshift operation
When, after the completion of the motor synchronous variable-speed, by the increased low-pressure system that comes to the height
The power of piezoelectric battery is supplied using the power recovered to before increasing, and the DCDC after raising is changed
The charging voltage set point of device resets to the initial value before improving.
The embodiment of the present invention additionally provides another DC-DC converter control device, including：Power calculation
Unit, for when detecting to be launched by motor that the DC-DC converter is powered, calculating the electricity
Machine total low pressure and low power required when working；Comparing unit, for by required total low pressure and low power and institute
The current residual power for stating DC-DC converter is compared；First control unit, institute is detected for working as
When the current residual power for stating DC-DC converter is less than required total low pressure and low power, control reduction institute
The existing loaded power for stating DC-DC converter is used, and is supplied for the electrical machine with power to be launched
Give.
Optionally, the motor powered by the DC-DC converter includes following at least one：It is automatically controlled
Clutch motor, step electric machine and shift motor.
Optionally, the DC-DC converter control device also includes：First reset cell, for when inspection
When measuring the motor action and completing, by having been reduced in the DC-DC converter, the load that power uses is extensive
The multiple power supply to before reducing.
Optionally, the DC-DC converter control device also includes：Charging voltage setup unit, is used for
When meeting DC-DC converter charging voltage set point raising condition, the DC-DC converter is charged
Voltage set point is improved.
Optionally, first reset cell is additionally operable to：When the motor action is completed, after raising
The DC-DC converter charging voltage set point reset to improve before initial value.
Optionally, the DC-DC converter control device also includes：First gearshift judging unit, is used for
When exceeding preset duration the time required to the synchronous variable-speed is detected, judge that the shift motor is currently
No execution downshift operation；First control unit is additionally operable to：When performing downshift operation, if during downshift
Consumption power needed for the motor synchronous variable-speed, which is more than high-tension battery, can use discharge power, control reduction
Come from low-pressure system to use the power of the high-tension battery, and reduce filling for the DC-DC converter
Piezoelectric voltage set point；When perform upshift operation when, if upshift when synchronous variable-speed when charge power be more than
High-tension battery can use charge power, and control increase comes from low-pressure system to be made to the power of the high-tension battery
With, and improve the charging voltage set point of the DC-DC converter.
Optionally, first reset cell is additionally operable to：When performing downshift operation, when the driving electricity
After the completion of machine synchronous variable-speed, the lowered low-pressure system that comes from is used the power of the high-tension battery
Recover the power supply to before reducing, and the charging voltage of the DC-DC converter after reduction is set
Point resets to the initial value before reduction；When performing upshift operation, when the motor synchronous variable-speed is complete
Cheng Hou, recovery is used the power of the high-tension battery to before increasing by the increased low-pressure system that comes from
Power supply, and the charging voltage set point of the DC-DC converter after raising is reset into raising
Preceding initial value.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that：
When there are synchronous variable-speed duty requirements by the battery-powered motor of high-tension electricity, for downshift operation
With upshift operation, the corresponding consumption power of downshift operation charge power corresponding with upshift operation is calculated respectively.
When the corresponding consumption power of downshift operation is more than the available discharge power of high-tension battery, reduction comes from low
The power of pressure system against high voltage battery is used, and reduces the charging voltage set point of DC-DC converter；When
When the corresponding consumption power of upshift operation is more than the available charge power of high-tension battery, increase comes from low pressure
The power of system against high voltage battery is used, and improves the charging voltage set point of DC-DC converter, so that
Reduce the duration needed for synchronous variable-speed.
When detecting to be launched by motor that DC-DC converter is powered, calculate start it is low needed for motor
Power is pressed, and is compared with the current residual power of DC-DC converter.When working as DC-DC converter
When preceding dump power is less than the low pressure and low power started needed for motor, i.e. the current residual work(of DC-DC converter
When rate can not meet electric motor starting demand in time, existing bearing power is used in reduction DC-DC converter,
To cause the current residual power of DC-DC converter to increase, to meet the low pressure and low power needed for startup motor,
So as to timely respond to the work requirements of motor.
Further, when meeting DC-DC converter charging voltage set point raising condition, DCDC is turned
Parallel operation charging voltage set point is improved, correspondingly the power output increase of DC-DC converter, it is meant that
The current residual power increase of DC-DC converter, so as to respond the work requirements of motor much sooner.
Brief description of the drawings
Fig. 1 is a kind of flow chart of DC-DC converter control method in the embodiment of the present invention；
Fig. 2 is the flow chart of another DC-DC converter control method in the embodiment of the present invention；
Fig. 3 is a kind of structural representation of DC-DC converter control device in the embodiment of the present invention；
Fig. 4 is the structural representation of another DC-DC converter control device in the embodiment of the present invention.
Embodiment
In the prior art, motor is provided with electric control clutch, is generally powered by DC-DC converter,
To drive electric control clutch to work.When carrying out shifting operation, generally using step electric machine and gearshift electricity
Machine realizes gear selecting and gearshift, and step electric machine and shift motor can be powered by DC-DC converter.Electricity
The peak power of motor input in control clutch is at 700 watts or so, and step electric machine is inputted with shift motor
Peak power also at 700 watts or so, operationally required input power is larger for above-mentioned motor.
When the motor that DC-DC converter is powered is to be launched, because power is larger needed for motor, and DCDC
The load carried on converter is more, causes DC-DC converter possibly can not timely respond to the power of motor
Demand.Specifically, if DC-DC converter can not timely respond to the motor of electric control clutch, exist
The problem of Torque Control of electric control clutch transmission is not accurate.If DC-DC converter can not timely respond to choosing
Shelves motor and shift motor, then shift time is longer.
In view of the above-mentioned problems, in embodiments of the present invention, when detecting the electricity powered by DC-DC converter
When machine is to be launched, calculate start motor needed for low pressure and low power, and with the current residual of DC-DC converter
Power is compared.When the current residual power of DC-DC converter is less than the low pressure work(needed for starting motor
During rate, i.e., when the current residual power of DC-DC converter can not meet electric motor starting demand in time, reduction
Existing bearing power is used in DC-DC converter, to cause the current residual power of DC-DC converter
Increase, to meet the low pressure and low power needed for startup motor, so as to timely respond to the work requirements of motor.
It is understandable to enable above-mentioned purpose, feature and beneficial effect of the invention to become apparent, with reference to
Accompanying drawing is described in detail to the specific embodiment of the present invention.
The embodiments of the invention provide a kind of DC-DC converter control method, reference picture 1, below by way of
Specific steps are described in detail.
Step S101, judges whether that the motor powered by DC-DC converter is to be launched.
In embodiments of the present invention, the motor powered by DCDC can include electric control clutch motor, choosing
Shelves motor and shift motor.When exist motor it is to be launched when, it is meant that Current vehicle exist accordingly need
Ask.For example, when the motor of electric control clutch is to be launched, it is meant that there is the demand to electric clutch.
When step electric machine is to be launched, it is meant that there is the demand of gear selecting operation.
Treated when any one detected in electric control clutch motor, step electric machine and shift motor is in
During starting state, you can perform step S102.
Step S102, calculates total low pressure and low power required during the motor work.
In specific implementation, motor total low pressure and low power required when working is：Current all electricity to be launched
Required low pressure and low power sum of the machine in normal work.
For example, when only detect electric control clutch motor it is to be launched when, that is, exist electric control clutch work need
When asking, the low pressure and low power needed for when total low pressure and low power works for electric control clutch motor.Correspondingly, when only
Detect step electric machine it is to be launched when, that is, when there are step electric machine work requirements, total low pressure and low power be gear selecting
Motor low pressure and low power required when working；When only detect shift motor it is to be launched when, that is, exist gearshift electricity
During machine work requirements, the low pressure and low power needed for when total low pressure and low power works for shift motor.
In actual applications, it is possible at the same have that electric control clutch motor is to be launched and step electric machine with
Shift motor operating mode to be launched, now, total low pressure and low power P=P1+P2+P3, wherein, P1For electricity
Control low pressure and low power required during clutch motor work, P2Low pressure and low power needed for when being worked for step electric machine,
P3Low pressure and low power needed for when being worked for shift motor.
When calculating motor work after required total low pressure and low power, step S103 is performed.
Step S103, by required total low pressure and low power and the current residual work(of the DC-DC converter
Rate is compared, and judges whether required total low pressure and low power is more than the current of the DC-DC converter
Dump power.
In actual applications, DC-DC converter may be used also in addition to it can be powered for three kinds of above-mentioned motors
Think that some other equipment of in-car is powered, for example, be powered for in-car comfort package,
Comfort package can include onboard navigation system, vehicle entertainment system, vehicle seat heater etc..
The power that the power output of DC-DC converter and the load carried thereon are consumed subtracts each other, i.e.,
It can obtain the current residual power of DC-DC converter.
By total low pressure and low power needed for being got in step S102 and DC-DC converter current residual power
It is compared.When required total low pressure and low power is less than the current residual power of DC-DC converter, meaning
DC-DC converter currently to have the ability to provide total low pressure and low power needed for motor to be launched, DCDC conversions
Device can be supplied directly for electrical machine with power to be launched.When required total low pressure and low power is more than DCDC
During the current residual power of converter, it is meant that DC-DC converter be currently able to output power without
Method meets the demand of motor to be launched, performs step S104.
Step S104, the existing loaded power of the control reduction DC-DC converter is used, and is institute
State electrical machine with power supply to be launched.
In specific implementation, because the current residual power of DC-DC converter is smaller, it can not meet
Supplied for electrical machine with power to be launched, therefore, it can existing loaded work(in reduction DC-DC converter
Rate is exported, to improve the power that DC-DC converter can be exported.
In embodiments of the present invention, existing loaded power output, Ke Yitong in reduction DC-DC converter
The electricity consumption for some comfort packages closed on car is crossed to realize.For example, can close vehicle seat heater,
Close multimedia entertainment system etc..After load in reduction DC-DC converter, DC-DC converter
Dump power increase, so as to be exported in time for electrical machine with power to be launched.
For example, vehicle there is currently gearshift demand, then shift motor is to be launched.Shift motor normal work
Shi Suoxu low pressure and low power is P2, DC-DC converter current residual power is P0, and P2＞ P0, i.e. DCDC
Converter can not currently timely respond to the power demand of shift motor.It therefore, it can reduction DCDC conversions
Existing loaded power is used on device so that the dump power P of DC-DC converter0Increase, until DCDC
Converter can meet the low pressure and low power demand of shift motor.
As can be seen here, when detecting to be launched by motor that DC-DC converter is powered, calculate and start electricity
Low pressure and low power needed for machine, and be compared with the current residual power of DC-DC converter.Work as DCDC
When the current residual power of converter is less than the low pressure and low power started needed for motor, i.e. DC-DC converter
It is existing negative in reduction DC-DC converter when current residual power can not meet electric motor starting demand in time
Carry power to use, to cause the current residual power of DC-DC converter to increase, motor institute is started to meet
The low pressure and low power needed, so as to timely respond to the work requirements of motor.
Using the DC-DC converter control method provided in the above embodiment of the present invention, when motor to be launched
During for electric control clutch motor, DC-DC converter can timely respond to electric control clutch motor, so as to
To improve the accuracy that electric control clutch transmits torque.When motor to be launched is step electric machine or shift motor
When, DC-DC converter timely responds to that shift time can be reduced.
In embodiments of the present invention, when motor works, DCDC chargers are powered for motor.Work as motor
After the completion of work, step S105 can also carry out.
Step S105, the load restoration that decreased power is used in the DC-DC converter is extremely reduced
Preceding power supply.
In embodiments of the present invention, after the completion of motor work, it can make power is reduced in step S104
The power supply that the power of load is reformed into before reduction.For example, the load that reduction power is used
For the use electric loading of comfort package, before step S104, namely before not reducing power use,
DC-DC converter is P for the power that comfort package is provideds0.When performing step S104, DCDC
Converter reduces comfortableness and used with the power of electric loading, and the power provided for comfortableness with electric loading is Ps1。
After the completion of motor work, the power for again providing DC-DC converter for comfortableness electrical equipment is from Ps1
Revert to Ps0。
In step s 103, the total low pressure and low power and DC-DC converter needed for motor work can be known
The magnitude relationship of current residual power.After magnitude relationship is known, it can be determined that currently whether meet DCDC
Converter charging voltage set point improves condition.I.e. no matter whether the required total low pressure and low power of motor work is big
In the current residual power of DC-DC converter, it may determine that currently whether meeting DC-DC converter fills
Piezoelectric voltage set point improves condition.
, can be by DC-DC converter when meeting DC-DC converter charging voltage set point raising condition
Charging voltage set point is improved.Conversely, keeping DC-DC converter charging voltage set point constant.
DC-DC converter charging voltage set point is improved to be advantageous in that：When DC-DC converter charging electricity
When pressing set point raising, in the case where electric current is constant, the input power increase of DC-DC converter is filled
The raising of piezoelectric voltage can efficiently reduce the damage of resistance on line between DC-DC converter and high-tension battery
Consumption, improves the charge efficiency of DC-DC converter.
In embodiments of the present invention, when shift motor is performing gear shift operation, the tooth of target gear is driven
Wheel is rotated.After synchronizer disengagement is presently in the corresponding gear of gear, it can be driven with motor synchronous
Device is rotated, to cause the rotating speed of synchronizer close with the rotating speed of target gear.Above-mentioned motor is to synchronization
Device carries out speed regulation process and is referred to as synchronous variable-speed process.When the rotating speed phase of the rotating speed and target gear of synchronizer
When near, shift motor control synchronizer is combined with the gear of target gear, can be effectively prevented from synchronization
Device rotating speed is different from the rotating speed of target gear and the problem of causing to tremble in shift process.Motor
It can be powered by high-tension battery.
For example, shift motor currently performs downshift operation, gear is currently located for 2 grades, rotating speed is 1500
Turn/min, target gear is 1 grade, and rotating speed is 2000 turns/min.In synchronizer after 2 grades disengage, its
Rotating speed be 1500 turns/min, then by motor by the adjustment of rotational speed of synchronizer be close to 2000 turns/min,
Now, the rotating speed of the rotating speed of synchronizer and target gear is close, consequently facilitating shift motor is by synchronizer
Engaged with the gear of target gear.
For synchronous variable-speed operating mode, the embodiment of the present invention additionally provides another DC-DC converter controlling party
Method, reference picture 2, is described in detail below by way of specific steps.
Step S201, when detecting motor and there is synchronous variable-speed operating mode, calculates motor synchronous
The time required to speed governing.
In embodiments of the present invention, motor is TM motors, is powered by vehicle-mounted high-tension battery.When
When there is synchronous variable-speed operating mode, it is meant that vehicle is currently executing gear shift operation.The same step of motor
It is whether limited related to the charge-discharge electric power that high-tension battery is current the time required to fast.
When exceeding preset duration the time required to synchronous variable-speed is detected, step S202 is performed.
Step S202, judges whether shift motor currently performs downshift operation.
In embodiments of the present invention, the gear shift operation that shift motor is performed includes downshift operation and upshift behaviour
Make.When shift motor currently performs downshift operation, step S203 is performed；Conversely, when shift motor is worked as
During preceding execution upshift operation, step S207 is performed.
Step S203, the power of required consumption when calculating motor synchronous variable-speed when downshifting.
In embodiments of the present invention, when performing downshift operation, the rotating speed of target gear, which is more than, to be currently located
The rotating speed of gear, namely synchronizer rotating speed be less than target gear rotating speed.It therefore, it can by driving
Motor drives synchronizer to rotate, and the rotating speed of synchronizer is raised, and this process is the process for consuming power,
The power that motor is consumed is provided by high-tension battery.
Step S204, the power of the required consumption and high-tension battery can be compared with discharge power,
Whether the power of consumption needed for judging, which is more than high-tension battery, can use discharge power.
When the power consumed needed for motor, which is more than high-tension battery, to use discharge power, it is meant that high pressure
The power that battery is currently able to output can not meet the demand of motor, perform step S205；Work as driving
When the power of consumption can use discharge power less than high-tension battery needed for motor, it is meant that the current energy of high-tension battery
The power enough exported can meet the demand of motor, therefore directly can provide synchronous for motor
The power of consumption needed for speed governing.
Step S205, reduction comes from low-pressure system and the power of high-tension battery is used, and reduces DCDC
The charging voltage set point of converter.
In embodiments of the present invention, reduction, which comes from power use of the low-pressure system to high-tension battery, to wrap
Include：Comfortableness need for electricity is closed, high-tension electricity air-conditioning request etc. is closed.In actual applications, DCDC
Converter is powered by high-tension battery, i.e., DC-DC converter can also regard the load of high-tension battery as.It is logical
The charging voltage set point of reduction DC-DC converter is crossed, so as to reduce DC-DC converter consumption
Power, and then the load of high-tension battery can be reduced.
Come from low-pressure system by reduction to use the power of high-tension battery, improve the available of high-tension battery
Discharge power, to meet the power of required consumption during motor synchronous variable-speed.Performed in step S205
Cheng Hou, can perform step S206.
Step S206, judges whether synchronous variable-speed completes.When synchronous variable-speed is completed, step S210 is performed；
When synchronous variable-speed is not completed, step S205 is continued executing with.
Step S207, charge power when calculating upshift during motor synchronous variable-speed.
In embodiments of the present invention, in upshift, the rotating speed for being currently located gear is more than turning for target gear
Speed.When synchronizer departs from, synchronizer can drive motor to rotate, so as to reduce rotating speed.Now,
Motor can be generated electricity, and the electric energy of generation is charged for high-tension battery.
Step S208, the charge power can be compared with high-tension battery with charge power, judge institute
State whether charge power can use charge power more than high-tension battery.
In embodiments of the present invention, the charge power when motor synchronous variable-speed is more than high-tension battery
When can use charge power, it is meant that high-tension battery can not receive the electric energy of motor generation completely, perform
Step S209；Charge power when motor synchronous variable-speed is less than the available charge power of high-tension battery
When, it is meant that high-tension battery can receive the electric energy of motor generation completely, therefore, motor production
Raw electric energy is all filled with into high-tension battery.
Step S209, raising comes from low-pressure system and the power of high-tension battery is used, and improves DCDC
The charging voltage set point of converter.
In embodiments of the present invention, with step S205 on the contrary, coming from low-pressure system to high pressure by improving
The power of battery uses and improves the charging voltage set point of DC-DC converter, to consume motor
The electric energy of generation.For example, the power that can improve comfortableness need for electricity is used.Performed in step S209
After the completion of, step S210 can be performed.
Step S210, judges whether synchronous variable-speed completes.When synchronous variable-speed is completed, step S211 is performed；
When synchronous variable-speed is not completed, step S209 is continued executing with.
Step S211, recovers the power supply of high-tension battery and the charging voltage setting of DC-DC converter
Point.
In embodiments of the present invention, when shift motor perform be downshift operation when, then synchronous variable-speed stage,
By the power of comfortableness electricity consumption using reduction, and the charging voltage set point of DC-DC converter is reduced.
Therefore, after the completion of synchronous variable-speed, the value before can the power of comfortableness electricity consumption extremely be reduced using recovery,
The charging voltage set point of DC-DC converter is also reset as the value before reduction.
For example, shift motor execution is downshift operation, in synchronous variable-speed stage, the work(of comfortableness electricity consumption
Rate is used from Ps2It is down to PS2, the charging voltage set point of DC-DC converter is reduced to 10V from 12V.
Then after the completion of synchronous variable-speed, the power of comfortableness electricity consumption is used from PS2It is adjusted to Ps2, by DCDC
The charging voltage set point of converter is adjusted to 12V from 10V.
When shift motor perform be downshift operation when, then synchronous variable-speed stage, increase comfortableness electricity consumption
Power is used, and is increased the charging voltage set point raising of DC-DC converter.Therefore, in same step
After the completion of speed, the power of comfortableness electricity consumption can be supplied using the power recovered to before increasing, by DCDC
The charging voltage set point of converter resets to the value before improving.
Reference picture 3, the embodiments of the invention provide a kind of DC-DC converter control device 30, including：
Power calculation unit 301, the control unit 303 of comparing unit 302 and first, wherein：
Power calculation unit 301, waits to open for that ought detect the motor powered by the DC-DC converter
When dynamic, total low pressure and low power required during the motor work is calculated；
Comparing unit 302, for working as required total low pressure and low power and the DC-DC converter
Preceding dump power is compared；
First control unit 303, the current residual power that the DC-DC converter is detected for working as is small
When required total low pressure and low power, the existing loaded power of the control reduction DC-DC converter
Use, and be the electrical machine with power supply to be launched.
In specific implementation, the motor powered by the DC-DC converter includes following at least one：
Electric control clutch motor, step electric machine and shift motor.
In specific implementation, the DC-DC converter control device 30 can also include：First resets list
Member 304, for when detecting the motor action completion, will have been reduced in the DC-DC converter
Power supply of the load restoration that power is used to before reducing.
In specific implementation, the DC-DC converter control device 30 can also include：Charging voltage is set
Order member 305, for when meeting DC-DC converter charging voltage set point raising condition, by described in
DC-DC converter charging voltage set point is improved.
In specific implementation, first reset cell 304 can be also used for：When the motor is finished
Cheng Shi, the initial value before improving is reset to by the DC-DC converter charging voltage set point after raising.
In specific implementation, the DC-DC converter control device 30 can also include：
First synchronous variable-speed time calculating unit (not shown in Fig. 3), is detected by high-tension battery for working as
When the motor of power supply has synchronous variable-speed duty requirements, needed for the calculating motor synchronous variable-speed
Time；
First gearshift judging unit (not shown in Fig. 3), is taken for that ought detect the synchronous variable-speed
Between exceed preset duration when, judge whether the shift motor currently performs downshift operation；
First control unit 303 is additionally operable to：When performing downshift operation, if driving during downshift
Consumption power needed for motor synchronous variable-speed, which is more than high-tension battery, can use discharge power, and control reduction comes from low
Pressure system is used the power of the high-tension battery, and is reduced the charging voltage of the DC-DC converter and set
Fixed point；When perform upshift operation when, if upshift when synchronous variable-speed when charge power be more than high-tension battery
Charge power can be used, control increase comes from low-pressure system and the power of the high-tension battery is used, and carries
The charging voltage set point of the high DC-DC converter.
In specific implementation, first reset cell 304 can be also used for：When performing downshift operation,
After the completion of the motor synchronous variable-speed, by the lowered low-pressure system that comes to the high-tension electricity
The power in pond is supplied using the power recovered to before reducing, and by the DC-DC converter after reduction
Charging voltage set point resets to the initial value before reduction；When performing upshift operation, when the driving electricity
After the completion of machine synchronous variable-speed, the increased low-pressure system that comes from is used the power of the high-tension battery
Recover the power supply to before increasing, and the charging voltage of the DC-DC converter after raising is set
Point resets to the initial value before improving.
Reference picture 4, the embodiment of the present invention additionally provides a kind of DC-DC converter control device 40, including：
Second synchronous variable-speed time calculating unit 401, the gearshift control unit 403 of judging unit 402 and second,
Wherein：
Second synchronous variable-speed time calculating unit 401, for electric by the battery-powered driving of high-tension electricity when detecting
When machine has synchronous variable-speed duty requirements, the time required to calculating the motor synchronous variable-speed；
Gearshift judging unit 402, for exceeding preset duration the time required to the synchronous variable-speed is detected
When, judge whether the shift motor currently performs downshift operation；
Second control unit 403, is used for：When performing downshift operation, motor when calculating downshift
The power of consumption needed for synchronous variable-speed, and can be compared with high-tension battery with discharge power, disappear when required
When wasted work rate can use discharge power more than described in, control reduction comes from low-pressure system to the high-tension battery
Power use, and reduce the charging voltage set point of the DC-DC converter；When execution upshift operation
When, charge power during synchronous variable-speed when upshifing is calculated, and can be carried out with charge power with high-tension battery
Compare, when the charge power can use charge power more than described in, control increase comes from low-pressure system
The power of the high-tension battery is used, and improves the charging voltage set point of the DC-DC converter.
In specific implementation, the DC-DC converter control device 40 can also include：Second resets list
Member 404, is used for：When performing downshift operation, after the completion of the motor synchronous variable-speed, it will drop
The low low-pressure system that comes from is supplied to the power of the high-tension battery using the power recovered to before reducing,
And the charging voltage set point of the DC-DC converter after reduction is reset into the initial value before reduction；
Perform upshift operation when, after the completion of the motor synchronous variable-speed, by it is increased come from it is low
Pressure system is supplied to the power of the high-tension battery using the power recovered to before increasing, and by after raising
The charging voltage set point of the DC-DC converter resets to the initial value before improving.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Rapid to can be by program to instruct the hardware of correlation to complete, the program can be stored in a computer can
Read in storage medium, storage medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, it can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (18)
1. a kind of DC-DC converter control method, it is characterised in that including：
When detect there are synchronous variable-speed duty requirements by the battery-powered motor of high-tension electricity when, calculate it is described drive
The time required to dynamic motor synchronous variable-speed；
When exceeding preset duration the time required to the synchronous variable-speed is detected, judge whether shift motor is currently held
Row downshift operation；
When performing downshift operation, the power of consumption needed for motor synchronous variable-speed when calculating downshift, and
It can be compared with high-tension battery with discharge power, when required consumption power can use discharge power more than described in
When, control reduction comes from low-pressure system and the power of the high-tension battery is used, and reduces the DCDC
The charging voltage set point of converter；
When performing upshift operation, charge power during synchronous variable-speed when upshifing is calculated, and can with high-tension battery
It is compared with charge power, when the charge power can use charge power more than described in, control increase
Come from low-pressure system to use the power of the high-tension battery, and improve filling for the DC-DC converter
Piezoelectric voltage set point.
2. DC-DC converter control method as claimed in claim 1, it is characterised in that also include：
Perform downshift operation when, after the completion of the motor synchronous variable-speed, by it is lowered come from it is low
Pressure system is supplied to the power of the high-tension battery using the power recovered to before reducing, and by after reduction
The charging voltage set point of the DC-DC converter resets to the initial value before reduction；
Perform upshift operation when, after the completion of the motor synchronous variable-speed, by it is increased come from it is low
Pressure system is supplied to the power of the high-tension battery using the power recovered to before increasing, and by after raising
The charging voltage set point of the DC-DC converter resets to the initial value before improving.
3. a kind of DC-DC converter control method, it is characterised in that including：
When detecting to be launched by motor that the DC-DC converter is powered, the motor work when institute is calculated
The total low pressure and low power needed；
Required total low pressure and low power and the current residual power of the DC-DC converter are compared；
When the current residual power for detecting the DC-DC converter is less than required total low pressure and low power,
The existing loaded power of the control reduction DC-DC converter is used, and is carried for the motor to be launched
For power supply.
4. DC-DC converter control method as claimed in claim 3, it is characterised in that described by described
The motor that DC-DC converter is powered includes following at least one：Electric control clutch motor, step electric machine with
And shift motor.
5. DC-DC converter control method as claimed in claim 4, it is characterised in that reduce institute in control
The existing loaded power for stating DC-DC converter is used, and is the electrical machine with power supply to be launched
Afterwards, in addition to：
Judge whether the motor action completes；
When the motor action is completed, the load restoration that power is used will be reduced in the DC-DC converter
Power supply to before reducing.
6. DC-DC converter control method as claimed in claim 5, it is characterised in that also include：Judge
Whether meet DC-DC converter charging voltage set point and improve condition；When meeting, by the DCDC
Converter charging voltage set point is improved.
7. DC-DC converter control method as claimed in claim 6, it is characterised in that when the motor
When completing, in addition to：The DC-DC converter charging voltage set point after raising is reset to not
Initial value before raising.
8. DC-DC converter control method as claimed in claim 4, it is characterised in that also include：
When detect there are synchronous variable-speed duty requirements by the battery-powered motor of high-tension electricity when, calculate it is described drive
The time required to dynamic motor synchronous variable-speed；
When exceeding preset duration the time required to the synchronous variable-speed is detected, judge that the shift motor is currently
No execution downshift operation；
When performing downshift operation, the power of consumption needed for motor synchronous variable-speed when calculating downshift, and
It can be compared with high-tension battery with discharge power, when required consumption power can use discharge power more than described in
When, control reduction comes from low-pressure system and the power of the high-tension battery is used, and reduces the DCDC
The charging voltage set point of converter；
When performing upshift operation, charge power during synchronous variable-speed when upshifing is calculated, and can with high-tension battery
It is compared with charge power, when the charge power can use charge power more than described in, control increase
Come from low-pressure system to use the power of the high-tension battery, and improve filling for the DC-DC converter
Piezoelectric voltage set point.
9. DC-DC converter control method as claimed in claim 8, it is characterised in that also include：
Perform downshift operation when, after the completion of the motor synchronous variable-speed, by it is lowered come from it is low
Pressure system is supplied to the power of the high-tension battery using the power recovered to before reducing, and by after reduction
The charging voltage set point of the DC-DC converter resets to the initial value before reduction；
Perform upshift operation when, after the completion of the motor synchronous variable-speed, by it is increased come from it is low
Pressure system is supplied to the power of the high-tension battery using the power recovered to before increasing, and by after raising
The charging voltage set point of the DC-DC converter resets to the initial value before improving.
10. a kind of DC-DC converter control device, it is characterised in that including：
Second synchronous variable-speed time calculating unit, is existed for working as to detect by the battery-powered motor of high-tension electricity
During synchronous variable-speed duty requirements, the time required to calculating the motor synchronous variable-speed；
Gearshift judging unit, during for exceeding preset duration the time required to the synchronous variable-speed is detected, judges
Whether the shift motor currently performs downshift operation；
Second control unit, is used for：When performing downshift operation, motor same step when calculating downshift
The power of consumption needed for fast, and can be compared with high-tension battery with discharge power, when required consumption power
More than it is described use discharge power when, control reduction comes from power of the low-pressure system to the high-tension battery
Use, and reduce the charging voltage set point of the DC-DC converter；When performing upshift operation, meter
Charge power during synchronous variable-speed when upshifing is calculated, and can be compared with high-tension battery with charge power,
When the charge power can use charge power more than described in, control increase comes from low-pressure system to described
The power of high-tension battery is used, and improves the charging voltage set point of the DC-DC converter.
11. DC-DC converter control device as claimed in claim 10, it is characterised in that also include：The
Two reset cells, are used for：When performing downshift operation, after the completion of the motor synchronous variable-speed,
By the lowered power for coming from low-pressure system to the power of the high-tension battery using recovery to before reducing
Supply, and by the charging voltage set point of the DC-DC converter after reduction reset to reduction before just
Initial value；, will be increased next after the completion of the motor synchronous variable-speed when performing upshift operation
The power of the high-tension battery is supplied using the power recovered to before increasing from low-pressure system, and will be carried
The charging voltage set point of the DC-DC converter after height resets to the initial value before improving.
12. a kind of DC-DC converter control device, it is characterised in that including：
Power calculation unit, for when detecting to be launched by motor that the DC-DC converter is powered, meter
Calculate total low pressure and low power required during the motor work；
Comparing unit, for by the current residual work(of required total low pressure and low power and the DC-DC converter
Rate is compared；
First control unit, for being less than the institute when the current residual power for detecting the DC-DC converter
During the total low pressure and low power needed, the existing loaded power of the control reduction DC-DC converter is used, and
For the electrical machine with power supply to be launched.
13. DC-DC converter control device as claimed in claim 12, it is characterised in that described by described
The motor that DC-DC converter is powered includes following at least one：Electric control clutch motor, step electric machine with
And shift motor.
14. DC-DC converter control device as claimed in claim 13, it is characterised in that also include：The
One reset cell, for when detecting the motor action and completing, by the DC-DC converter
Power supply of the load restoration that reduction power is used to before reducing.
15. DC-DC converter control device as claimed in claim 14, it is characterised in that also include：Fill
Piezoelectric voltage setup unit, for when meeting DC-DC converter charging voltage set point raising condition, inciting somebody to action
The DC-DC converter charging voltage set point is improved.
16. DC-DC converter control device as claimed in claim 15, it is characterised in that first weight
Unit is put to be additionally operable to：When the motor action is completed, the DC-DC converter after raising is charged
Voltage set point resets to the initial value before improving.
17. DC-DC converter control device as claimed in claim 16, it is characterised in that also include：
First synchronous variable-speed time calculating unit, is existed for working as to detect by the battery-powered motor of high-tension electricity
During synchronous variable-speed duty requirements, the time required to calculating the motor synchronous variable-speed；
First gearshift judging unit, during for exceeding preset duration the time required to the synchronous variable-speed is detected,
Judge whether the shift motor currently performs downshift operation；
First control unit is additionally operable to：When performing downshift operation, if the motor is synchronous during downshift
Consumption power needed for speed governing, which is more than high-tension battery, can use discharge power, and control reduction comes from low-pressure system pair
The power of the high-tension battery is used, and reduces the charging voltage set point of the DC-DC converter；When
Perform upshift operation when, if upshift when synchronous variable-speed when charge power be more than high-tension battery can with charging
Power, control increase comes from low-pressure system and the power of the high-tension battery is used, and improves described
The charging voltage set point of DC-DC converter.
18. DC-DC converter control device as claimed in claim 17, it is characterised in that first weight
Unit is put to be additionally operable to：When performing downshift operation, after the completion of the motor synchronous variable-speed, by
The low-pressure system that comes from of reduction is supplied using the power recovered to before reducing the power of the high-tension battery
Give, and by the charging voltage set point of the DC-DC converter after reduction reset to reduction before it is initial
Value；When performing upshift operation, after the completion of the motor synchronous variable-speed, come from increased
The power of the high-tension battery is supplied using the power recovered to before increasing in low-pressure system, and will be improved
The charging voltage set point of the DC-DC converter afterwards resets to the initial value before improving.
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| CN201610236376.1A CN107302241B (en) | 2016-04-15 | 2016-04-15 | DCDC converter control method and device |
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|---|---|---|---|
| CN201610236376.1A CN107302241B (en) | 2016-04-15 | 2016-04-15 | DCDC converter control method and device |
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