CN110239511A - A kind of BSG engine quick deceleration control method and device - Google Patents
A kind of BSG engine quick deceleration control method and device Download PDFInfo
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- CN110239511A CN110239511A CN201910411798.1A CN201910411798A CN110239511A CN 110239511 A CN110239511 A CN 110239511A CN 201910411798 A CN201910411798 A CN 201910411798A CN 110239511 A CN110239511 A CN 110239511A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
-
- 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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
-
- 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
- B60W2710/24—Energy storage means
- B60W2710/242—Energy storage means for electrical energy
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The present invention relates to a kind of BSG engine quick deceleration control method and device, the method for the invention passes through the voltage for increasing secondary network, so that the charging rate of A-battery accelerates and electric power storage power increases；Additionally by the first load for opening secondary network, so that the generated energy of BSG motor increases；The method further includes the voltage for regulating and controlling high voltage network in addition to increasing secondary network voltage, when the first actual current of high-tension battery reaches the first threshold electric current of high-tension battery, opens first load；The high voltage network and the secondary network increase the absorbability to BSG electric power generation electric current, and then increase the torque of BSG motor, so as to shorten the drop engine speed time；The method ensure that secondly the storage of energy carries out the consumption of energy first, improve fuel economy.
Description
Technical field
The present invention relates to technical field of automobile control, in particular to a kind of BSG engine quick deceleration control method and dress
It sets.
Background technique
48V dynamical system is to increase 48V electrical network on original 12V 24V engine power system.Such as Fig. 1
Shown, 48V electrical system mainly increases 48V battery, BSG motor and loads with other 48V.48V electrical system and low pressure
It is converted between electrical system using DCDC.The rechargeable electrical energy source of A-battery in 48V system is BSG electric power generation,
Pass through what is realized after DCDC progress voltage conversion.DCDC carries out the voltage after voltage conversion, both can be to low-voltage electric system
Battery charging, and can power to the related load of low-voltage electric system.
In vehicle travel process, when engine speed height needs to upshift or need to shut down to a certain extent, start
Machine revolving speed needs to be reduced to the slow-speed of revolution from high revolving speed, and the length of time of the process influences driver comfort and dynamic property, it is desirable that more
It is short better.Using the negative torque ability of BSG, the revolving speed decline of engine can speed up.
And BSG motor is the converting unit of an energy, itself is unable to storage energy, is increased produced by BSG negative torque
Electric energy can flow to 48V battery and low-voltage electrical network is flowed to by DCDC, but 48V battery is influenced by temperature and electricity,
When being in low temperature environment and high electricity, 48V battery can be in closed state, can not absorb the electric energy generated from BSG, therefore limit
The raising for having made BSG motor negative torque causes vehicle upshift or downtime long, influences driver comfort and dynamic property.
Summary of the invention
The technical problem to be solved by the present invention is to vehicle upshift or stopping process in, the slow problem of drop engine speed.
In order to solve the above technical problems, first aspect present invention discloses a kind of BSG engine quick deceleration control method,
Include:
Judge whether engine enters turndown mode；
If increasing the voltage of secondary network into the turndown mode so that A-battery charging rate accelerate and
Electric power storage power increases；
Check whether DCDC electrical power reaches the limit values；
If the DCDC electrical power does not reach the limit values, the first load of the secondary network is opened, so that BSG is electric
The generated energy of machine increases.
Further, the method also includes:
Check again for whether the DCDC electrical power reaches the limit values；
If the DCDC electrical power does not reach the limit values, the second load of the secondary network is opened.
Further, first load is cooling fan, and second load is current-limiting circuit for wind-mill generator.
Further, it is described judge engine whether into turndown mode include:
Current vehicle operation information is obtained, judges whether engine enters reduction of speed mould according to the current vehicle operation information
Formula.
Further, the current vehicle operation information includes: current clutch state, present engine revolving speed and upshift
Instruction；
If getting the upshift command, and the clutch is opened, while the present engine revolving speed is greater than target
Revolving speed then enters the turndown mode.
Further, the current vehicle operation information includes: current clutch state, present engine revolving speed and shutdown
Instruction；
If getting the halt instruction, and the clutch is opened, while the present engine revolving speed is greater than zero, then
Into the turndown mode.
Second aspect of the present invention discloses a kind of BSG engine quick deceleration control method, comprising:
Judge whether engine enters turndown mode；
If increasing secondary network voltage into the turndown mode, and regulate and control high voltage network voltage, so that the low pressure
Network and the high voltage network increase the absorbability to BSG electric power generation electric current；
In the case where the regulation high voltage network voltage, the target voltage of a high voltage network default first,
First actual current of the secondary first threshold electric current for obtaining high-tension battery and the high-tension battery, then according to the first threshold
Electric current and first actual current regulate and control the virtual voltage of the high voltage network, so that the virtual voltage reaches the target
Voltage.
In the case where the raising secondary network voltage, check whether DCDC electrical power reaches the limit values；Described
In the case that DCDC electrical power does not reach the limit values, when first actual current reaches the first threshold electric current, open
The first load for opening the secondary network, so that the generated energy of BSG motor increases.
Further, the first actual current tool of the first threshold electric current for obtaining high-tension battery and the high-tension battery
Gymnastics conduct:
The first threshold electric current is tabled look-up acquisition according to the practical SOC and actual temperature of the high-tension battery；
First actual current is measured by sensor.
Further, it is described judge engine whether into turndown mode include:
Current vehicle operation information is obtained, judges whether engine enters reduction of speed mould according to the current vehicle operation information
Formula.
Third aspect present invention discloses a kind of BSG engine quick deceleration control device, comprising:
Reduction unit is judged, for judging whether engine enters turndown mode；
Voltage control unit, for the voltage of secondary network being increased, so that A-battery is filled when entering turndown mode
Electric speed is accelerated and electric power storage power increases；
Setting unit is loaded, for opening the secondary network in the case where DCDC electrical power does not reach the limit values
First load so that the generated energy of BSG motor increases.
By adopting the above technical scheme, BSG engine quick deceleration control method and device of the present invention have and have as follows
Beneficial effect:
A kind of method that first aspect present invention proposes, when entering turndown mode, by increasing the voltage of secondary network,
So that the charging rate of A-battery accelerates and electric power storage power increases；Additionally by the first load for opening secondary network, increase
The consumption of BSG motor electric energy, and then increase the torque of the BSG motor, so as to shorten the drop engine speed time, improves and drive
Comfort and dynamic property.
In addition a kind of method that second aspect of the present invention proposes further includes regulation high pressure in addition to increasing secondary network voltage
The voltage of network, when first actual current reaches the first threshold electric current, open the secondary network first is negative
It carries；The high voltage network and the secondary network increase the absorbability to BSG electric power generation electric current, and then increase BSG
The torque of motor, so as to shorten the drop engine speed time；The method ensure that secondly the storage of energy carries out energy first
Consumption, improves fuel economy.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic diagram of 48V dynamical system in the prior art of the invention；
Fig. 2 is a kind of BSG engine quick deceleration control method of the embodiment of the present invention；
Fig. 3 is a kind of BSG engine quick deceleration control device of the embodiment of the present invention；
Fig. 4 is another BSG engine quick deceleration control method of the embodiment of the present invention；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
" one embodiment " or " embodiment " referred to herein, which refers to, may be included at least one implementation of the invention
A particular feature, structure, or characteristic.In the description of the present invention, it is to be understood that, term " on ", "lower", "top", "bottom" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can be expressed or what is implied includes one or more of the features.Moreover, term " first ",
" second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way
The data used are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein can be in addition to scheming herein
Sequence other than those of showing or describe is implemented.
Embodiment 1:
As shown in Fig. 2, a kind of BSG engine quick deceleration control method, comprising:
S101, judges whether engine enters turndown mode；
S102, if increasing the voltage of secondary network into the turndown mode, so that the charging rate of A-battery adds
Fast and electric power storage power increases；
S103, checks whether DCDC electrical power reaches the limit values；
S104 opens the first load of the secondary network if the DCDC electrical power does not reach the limit values, so that
The generated energy of BSG motor increases.
Through the implementation of the above technical solution, the method for the invention, when entering turndown mode, by increasing low voltage network
The voltage of network, so that the charging rate of A-battery accelerates and electric power storage power increases；Additionally by the first of unlatching secondary network
Load increases the consumption of BSG motor electric energy, and then increases the torque of the BSG motor, when so as to shorten drop engine speed
Between, improve the comfort and dynamic property of driving.
The method of the invention applies to 48V dynamical system, and the 48V dynamical system is started in original 12V or 24V
On motor-driven Force system, increase 48V electrical network.As shown in Figure 1, high voltage network of the present invention is 48V network, the low pressure
Network is 12V network, and the 48V network mainly includes 48V battery and BSG motor, and the high-tension battery is 48V battery, described
A-battery is 12V battery.
The method also includes:
S105, checks again for whether the DCDC electrical power reaches the limit values；
S106 opens the second load of the 12V network if the DCDC electrical power does not reach the limit values.
First load is cooling fan, and second load is current-limiting circuit for wind-mill generator.
It should be noted that the DCDC measures actual electric power from tape controller, do not reached in the DCDC electrical power
In the case where limiting value, other power loads of the 12V network can also be opened, other described power loads include safety
Translator work and throttle motor movement.
The method of the invention passes through the power load for successively opening the 12V network, takes full advantage of the 12V network
Energy-consuming parts increase BSG motor generated energy, so that the torque for increasing BSG makes engine quick deceleration.
S101, it is described judge engine whether into turndown mode include:
Current vehicle operation information is obtained, judges whether engine enters reduction of speed mould according to the current vehicle operation information
Formula.
The current vehicle operation information includes: current clutch state, present engine revolving speed and upshift command；
If getting the upshift command, and the clutch is opened, while the present engine revolving speed is greater than target
Revolving speed then enters the turndown mode.
As shown in figure 3, a kind of BSG engine quick deceleration control device, comprising:
Reduction unit is judged, for judging whether engine enters turndown mode；
Voltage control unit, for the voltage of 12V network being increased, so that the charging of 12V battery when entering turndown mode
Speed is accelerated and electric power storage power increases；
Setting unit is loaded, for opening the 12V network in the case where DCDC electrical power does not reach the limit values
First load, so that the generated energy of BSG motor increases.
Embodiment 2:
As shown in figure 4, a kind of BSG engine quick deceleration control method, comprising:
S201, judges whether engine enters turndown mode；
S202 if increasing secondary network voltage into the turndown mode, and regulates and controls high voltage network voltage, so that institute
Secondary network and high voltage network increase are stated to the absorbability of BSG electric power generation electric current；
S203, in the case where the regulation high voltage network voltage, the target electricity of a high voltage network default first
Secondly pressure obtains the first threshold electric current of high-tension battery and the first actual current of the high-tension battery, then according to described the
One threshold current and first actual current regulate and control the virtual voltage of the high voltage network, so that the virtual voltage reaches institute
State target voltage.
S204 checks whether DCDC electrical power reaches the limit values in the case where the raising secondary network voltage；Institute
It states in the case that DCDC electrical power do not reach the limit values, when first actual current reaches the first threshold electric current,
The first load for opening the secondary network, so that the generated energy of BSG motor increases.
The embodiment the method further includes the voltage for regulating and controlling high voltage network, when described in addition to increasing secondary network voltage
When first actual current reaches the first threshold electric current, the first load of the secondary network is opened；The high voltage network and
The secondary network increases the absorbability to BSG electric power generation electric current, and then increases the torque of BSG motor, to contract
Short engine deceleration time；The method ensure that secondly the storage of energy carries out the consumption of energy first, improve fuel oil warp
Ji property.
The method of the invention applies to 48V dynamical system, and the 48V dynamical system is started in original 12V or 24V
On motor-driven Force system, increase 48V electrical network.As shown in Figure 1, high voltage network of the present invention is 48V network, the low pressure
Network is 12V network, and the 48V network mainly includes 48V battery and BSG motor, and the high-tension battery is 48V battery, described
A-battery is 12V battery.
First actual current concrete operations of the first threshold electric current and the 48V battery for obtaining 48V battery are as follows:
The first threshold electric current is tabled look-up acquisition according to the practical SOC and actual temperature of the 48V battery；
First actual current is measured by sensor.
S201, it is described judge engine whether into turndown mode include:
Current vehicle operation information is obtained, judges whether engine enters reduction of speed mould according to the current vehicle operation information
Formula.
The current vehicle operation information includes: current clutch state, present engine revolving speed and halt instruction；
If getting the halt instruction, and the clutch is opened, while the present engine revolving speed is greater than zero, then
Into the turndown mode.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of BSG engine quick deceleration control method characterized by comprising
Judge whether engine enters turndown mode；
If increasing the voltage of secondary network into the turndown mode, so that the charging rate of A-battery accelerates and electric power storage
Power increases；
Check whether DCDC electrical power reaches the limit values；
If the DCDC electrical power does not reach the limit values, the first load of the secondary network is opened, so that BSG motor
Generated energy increases.
2. the method according to claim 1, wherein the method also includes:
Check again for whether the DCDC electrical power reaches the limit values；
If the DCDC electrical power does not reach the limit values, the second load of the secondary network is opened.
3. according to the method described in claim 2, described second loads it is characterized in that, first load is cooling fan
For current-limiting circuit for wind-mill generator.
4. the method according to claim 1, wherein it is described judge engine whether into turndown mode include:
Current vehicle operation information is obtained, judges whether engine enters turndown mode according to the current vehicle operation information.
5. according to the method described in claim 4, it is characterized in that, the current vehicle operation information includes: to work as front clutch
State, present engine revolving speed and upshift command；
If getting the upshift command, and the clutch is opened, while the present engine revolving speed is greater than rotating speed of target,
Then enter the turndown mode.
6. according to the method described in claim 4, it is characterized in that, the current vehicle operation information includes: to work as front clutch
State, present engine revolving speed and halt instruction；
If getting the halt instruction, and the clutch is opened, while the present engine revolving speed is greater than zero, then enters
The turndown mode.
7. a kind of BSG engine quick deceleration control method characterized by comprising
Judge whether engine enters turndown mode；
If increasing secondary network voltage into the turndown mode, and regulate and control high voltage network voltage, so that the secondary network
Increase the absorbability to BSG electric power generation electric current with the high voltage network；
In the case where the regulation high voltage network voltage, the target voltage of a high voltage network default first, next is obtained
The first threshold electric current of high-tension battery and the first actual current of the high-tension battery are taken, then according to the first threshold electric current
Regulate and control the virtual voltage of the high voltage network with first actual current, so that the virtual voltage reaches the target electricity
Pressure.
In the case where the raising secondary network voltage, check whether DCDC electrical power reaches the limit values；In the DCDC electricity
In the case that power does not reach the limit values, when first actual current reaches the first threshold electric current, described in unlatching
First load of secondary network, so that the generated energy of BSG motor increases.
8. the method according to the description of claim 7 is characterized in that the first threshold electric current of high-tension battery and described of obtaining
First actual current concrete operations of high-tension battery are as follows:
The first threshold electric current is tabled look-up acquisition according to the practical SOC and actual temperature of the high-tension battery；
First actual current is measured by sensor.
9. the method according to the description of claim 7 is characterized in that it is described judge engine whether into turndown mode include:
Current vehicle operation information is obtained, judges whether engine enters turndown mode according to the current vehicle operation information.
10. a kind of BSG engine quick deceleration control device characterized by comprising
Reduction unit is judged, for judging whether engine enters turndown mode；
Voltage control unit, for increasing the voltage of secondary network when entering turndown mode, so that the charging speed of A-battery
Degree is accelerated and electric power storage power increases；
Setting unit is loaded, in the case where DCDC electrical power does not reach the limit values, opening the of the secondary network
One load, so that the generated energy of BSG motor increases.
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| CN201910411798.1A CN110239511B (en) | 2019-05-17 | 2019-05-17 | BSG engine rapid deceleration control method and device |
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| CN201910411798.1A CN110239511B (en) | 2019-05-17 | 2019-05-17 | BSG engine rapid deceleration control method and device |
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| CN116914895A (en) * | 2023-09-12 | 2023-10-20 | 浙江格瑶科技股份有限公司 | Power supply device of motor protector and power supply method thereof |
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| CN110239511B (en) | 2020-11-03 |
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