CN109572699A - Hybrid vehicle and its shift control method and system - Google Patents
Hybrid vehicle and its shift control method and system Download PDFInfo
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- CN109572699A CN109572699A CN201710911836.0A CN201710911836A CN109572699A CN 109572699 A CN109572699 A CN 109572699A CN 201710911836 A CN201710911836 A CN 201710911836A CN 109572699 A CN109572699 A CN 109572699A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 25
- 230000007257 malfunction Effects 0.000 claims description 9
- 238000010248 power generation Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 2
- 238000005299 abrasion Methods 0.000 description 9
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Classifications
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/30—Control strategies involving selection of transmission gear ratio
-
- 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
-
- 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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
-
- 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
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of hybrid vehicle and its shift control method and systems, wherein, the hybrid vehicle includes engine, power motor, power battery, speed changer, the auxiliary-motor being connected with engine, the shift control method is the following steps are included: when the engine is running, the speed of hybrid vehicle is obtained by transmission control unit, and the revolving speed of engine is obtained by control unit of engine；Judge whether to meet according to the revolving speed of the speed of hybrid vehicle and engine and assists shift condition；If meeting shift condition of assisting, full-vehicle control unit, which generates, assists shifting commands, and sends to auxiliary-motor control unit and assist shifting commands, to control auxiliary-motor to engine output torque, to accelerate the gear switching of speed changer.Shift control method according to the present invention, can effectively shorten the shift time of hybrid vehicle, improve the driving experience of user, while additionally aiding the service life for extending clutch.
Description
Technical field
The present invention relates to Development of HEV Technology field, in particular to the shift controlling party of a kind of hybrid vehicle
Method, a kind of non-transitorycomputer readable storage medium, a kind of shifting control system of hybrid vehicle and a kind of mixing are dynamic
Power automobile.
Background technique
For speed changer in carrying out shift process, engine speed, which will rise or fall, reaches the corresponding revolving speed of target gear,
Interaction is generally by between clutch and engine come what is realized for this process, and the duration is relatively long, Yong Huyi
As can be clearly felt that power dies down.Also, in shift process, the work of slipping of clutch is relatively large, thus can accelerate from
The abrasion of clutch reduces the service life of clutch.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
One purpose is to propose a kind of shift control method of hybrid vehicle, can effectively shorten the shift of hybrid vehicle
Time, the driving experience of user is improved, while additionally aiding the service life for extending clutch.
Second object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
Third object of the present invention is to propose a kind of shifting control system of hybrid vehicle.
Fourth object of the present invention is to propose a kind of hybrid vehicle.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of shift controlling party of hybrid vehicle
Method, wherein the hybrid vehicle includes engine, power motor, power battery, DC-DC converter, speed changer and institute
The connected auxiliary-motor of engine is stated, the engine outputs power to the hybrid vehicle by clutch and speed changer
Wheel, the power motor is used to output driving force to the wheel of the hybrid vehicle, and the power battery is for giving
Power motor power supply, the auxiliary-motor respectively with the power motor, the DC-DC converter and the power battery phase
Even, the auxiliary-motor generates electricity under the drive of the engine, and the shift control method is the following steps are included: when described
When engine is run, the speed of the hybrid vehicle is obtained by transmission control unit, and list is controlled by engine
Member obtains the revolving speed of the engine；Judged whether according to the revolving speed of the speed of the hybrid vehicle and the engine full
Football association helps shift condition；If meeting the assistance shift condition, full-vehicle control unit, which generates, assists shifting commands, and to pair
Motor control unit sends the assistance shifting commands, to control the auxiliary-motor to the engine output torque, to accelerate
The gear of the speed changer switches.
The shift control method of hybrid vehicle according to an embodiment of the present invention, by the vehicle for obtaining hybrid vehicle
The revolving speed of speed and engine, and judge whether to meet shift condition of assisting according to the speed of acquisition and revolving speed, and assist meeting
When helping shift condition, control auxiliary-motor to engine output torque, thereby, it is possible to effectively shorten hybrid vehicle shift when
Between, the driving experience of user is improved, while the abrasion to clutch can also be reduced, facilitate extension clutch uses the longevity
Life.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter is stored thereon with computer program, realizes that first aspect present invention embodiment proposes mixed when which is executed by processor
Close the shift control method of power vehicle.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention, by the computer journey for executing its storage
Sequence, can effectively shorten the shift time of hybrid vehicle, improve the driving experience of user, while can also reduce to clutch
The abrasion of device facilitates the service life for extending clutch.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of shift control system of hybrid vehicle
System, wherein the hybrid vehicle includes engine, power motor, power battery, DC-DC converter, speed changer and institute
The connected auxiliary-motor of engine is stated, the engine outputs power to the hybrid vehicle by clutch and speed changer
Wheel, the power motor is used to output driving force to the wheel of the hybrid vehicle, and the power battery is for giving
Power motor power supply, the auxiliary-motor respectively with the power motor, the DC-DC converter and the power battery phase
Even, the auxiliary-motor generates electricity under the drive of the engine, and the shifting control system includes: transmission control list
Member, for obtaining the speed of the hybrid vehicle；Control unit of engine, for obtaining the revolving speed of the engine；It is whole
Vehicle control unit assists to change for judging whether to meet according to the speed of the hybrid vehicle and the revolving speed of the engine
Blend stop part, and generated when meeting the assistance shift condition and assist shifting commands；Auxiliary-motor control unit, for receiving and holding
The row assistance shifting commands, to control the auxiliary-motor to the engine output torque, to accelerate the gear of the speed changer
Position switching.
The shifting control system of hybrid vehicle according to an embodiment of the present invention by transmission control unit and starts
Machine control unit obtains the speed of hybrid vehicle and the revolving speed of engine respectively, and by full-vehicle control unit according to above-mentioned
Speed and revolving speed judge whether to meet shift condition of assisting, and when meeting assistance shift condition, are controlled by auxiliary-motor single
Member control auxiliary-motor thereby, it is possible to effectively shorten the shift time of hybrid vehicle, improves user to engine output torque
Driving experience, while the abrasion to clutch can also be reduced, facilitate the service life for extending clutch.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of hybrid vehicle comprising this hair
The shifting control system for the hybrid vehicle that bright third aspect embodiment proposes.
Hybrid vehicle according to an embodiment of the present invention, can effectively shorten shift time, improve the driving body of user
It tests, while the abrasion to clutch can also be reduced, facilitate the service life for extending clutch.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or by recognizing practice of the invention.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the hybrid vehicle of one embodiment of the invention；
Fig. 2 is the structural schematic diagram according to the hybrid vehicle of one embodiment of the invention；
Fig. 3 is the flow chart according to the shift control method of the hybrid vehicle of the embodiment of the present invention；
Fig. 4 is between detection full-vehicle control unit and auxiliary-motor control unit according to a specific embodiment of the invention
The flow chart of the method for communication state；
Fig. 5 is between detection full-vehicle control unit and control unit of engine according to a specific embodiment of the invention
The flow chart of the method for communication state；
Fig. 6 is between detection full-vehicle control unit and transmission control unit according to a specific embodiment of the invention
The flow chart of the method for communication state；
Fig. 7 is the process for judging whether to meet the method for assisting shift condition according to one specific embodiment of the present invention
Figure；
Fig. 8 is the flow chart that the method for control of shift is assisted according to the realization of one specific embodiment of the present invention；
Fig. 9 is the block diagram according to the shifting control system of the hybrid vehicle of the embodiment of the present invention；
Figure 10 is the block diagram according to the hybrid vehicle of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In one embodiment of the invention, as shown in Figure 1, hybrid vehicle may include engine 1, power motor 2,
Power battery 3 and the auxiliary-motor 4 being connected with engine 1, wherein power motor 2 and auxiliary-motor 4 are all connected to power battery 3.Into
One step, as shown in Fig. 2, hybrid vehicle may also include DC-DC converter 5 and speed changer 6, wherein engine 1 by from
Clutch and speed changer 6 output power to the wheel of hybrid vehicle, and power motor 2 is for outputting driving force to hybrid power
The wheel of automobile, power battery 3 for give power motor 2 power, auxiliary-motor 4 respectively with power motor 2, DC-DC converter 5 and
Power battery 3 is connected, and the negative torque under the drive of engine 1 of auxiliary-motor 4 is operated to generate electricity.Wherein, auxiliary-motor 4 generates
Electric energy can provide to power battery 3, power motor 2, DC-DC converter 5, low-voltage load 7 and high-voltage load (not shown)
At least one of.Wherein, low-voltage load 7 may include but be not limited to car light, radio etc., and high-voltage load may include but be not limited to
On-board air conditioner etc..
Power motor 2 and auxiliary-motor 4 respectively correspond and serve as driving motor and generator as a result, auxiliary-motor 4 when due to low speed
Generated output with higher and generating efficiency can maintain vehicle low speed so as to meet the power demand run at a low speed
Electric equilibrium maintains vehicle low speed ride comfort, promotes the power performance of vehicle.
In some embodiments, auxiliary-motor 4 can be BSG (Belt-driven Starter Generator, belt transmission
Starting/generating integrated motor) motor.It should be noted that auxiliary-motor 4 belongs to high-voltage motor, such as the power generation electricity of auxiliary-motor 4
Pressure is suitable with the voltage of power battery 3, so that the electric energy that auxiliary-motor 4 generates can be without voltage transformation directly to power battery
3 chargings can also power directly to power motor 2 and/or DC-DC converter 5.And auxiliary-motor 4 also belongs to high efficiency generator, example
Drive the power generation of auxiliary-motor 4 that 97% or more generating efficiency can be realized such as under 1 idling speed of engine.
Since the power of BSG motor and engine contacts relatively closely, it is more suitable for implementing the mixed of the embodiment of the present invention
Close power vehicle and its shift control method and system.
The hybrid vehicle and its shift control method and system of the present invention is described in detail embodiment with reference to the accompanying drawing.
Fig. 3 is the flow chart according to the shift control method of the hybrid vehicle of the embodiment of the present invention.
As shown in figure 3, the shift control method of the hybrid vehicle of the embodiment of the present invention, comprising the following steps:
S1 obtains the speed of hybrid vehicle by transmission control unit, and by starting when the engine is running
The revolving speed of machine control unit acquisition engine.
S2 judges whether to meet and assists shift condition according to the revolving speed of the speed of hybrid vehicle and engine.
When carrying out shift control, CAN (Controller Area Network, controller LAN can be confirmed first
Network) execution shift control in network each control unit between communication it is whether normal, and final execute shift control
Whether the device of movement breaks down.Therefore, in one embodiment of the invention, judging whether to meet assistance shift condition
Before, it can also detect respectively between full-vehicle control unit and auxiliary-motor control unit, full-vehicle control unit and control unit of engine
Between communication state between full-vehicle control unit and transmission control unit, and detect auxiliary-motor and auxiliary-motor control unit
Malfunction.Then, can be turned according to above-mentioned communication state, malfunction, the speed of hybrid vehicle and engine
Speed, which judges whether to meet, assists shift condition.
Specifically, when between full-vehicle control unit and auxiliary-motor control unit, the control of full-vehicle control unit and engine it is single
Normal and auxiliary-motor and auxiliary-motor control unit are communicated between member between full-vehicle control unit and transmission control unit not go out
When existing failure, if hybrid vehicle accelerates and the revolving speed of engine is greater than the first preset rotation speed, judges to meet and assist to rise
Blend stop part；If hybrid vehicle slows down and the revolving speed of engine is less than the second preset rotation speed, judges to meet and assist downshift
Condition.
S3, if meeting shift condition of assisting, full-vehicle control unit, which generates, assists shifting commands, and controls to auxiliary-motor
Unit, which is sent, assists shifting commands, to control auxiliary-motor to engine output torque, to accelerate the gear switching of speed changer.
Specifically, when judgement satisfaction assistance upshift condition, full-vehicle control unit, which generates, assists upshift instruction, and electric to pair
Machine control unit, which is sent, assists upshift instruction, exports negative torque to control auxiliary-motor to engine, to improve turning for engine
The fall off rate of speed, until the revolving speed of engine is reduced to first object revolving speed, wherein first object revolving speed is the gear after downshift
The revolving speed of engine corresponding to position.
When judgement, which meets, assists downshift condition, full-vehicle control unit, which generates, assists down shift demand, and controls to auxiliary-motor
Unit, which is sent, assists down shift demand, positive-torque is exported to control auxiliary-motor to engine, to improve the upper of the revolving speed of engine
Raising speed rate, until the revolving speed of engine is increased to the second rotating speed of target, wherein the second rotating speed of target is right for the gear after upshift
The revolving speed for the engine answered.
In one particular embodiment of the present invention, as shown in figure 4, can by following steps detect full-vehicle control unit with
Communication state between auxiliary-motor control unit:
S101, VCU (Vehicle Control Unit, full-vehicle control unit) judge whether to receive BSG message.If
It is no, then follow the steps S102；If so, thening follow the steps S103.In the embodiment by taking auxiliary-motor is BSG motor as an example.
S102, timer add up timing time.Then step S104 is executed.
S103, timer are reset.
S104, judges whether timing time is greater than Cs.Cs is the time threshold of setting.If not, thening follow the steps S105；
If so, thening follow the steps S106.
S105 judges that VCU and the communication of BSG motor control unit are normal.
S106 judges VCU and BSG motor control unit communication abnormality.
In one particular embodiment of the present invention, as shown in figure 5, can by following steps detect full-vehicle control unit with
Communication state between control unit of engine ECU (Engine Control Unit):
S201, VCU judge whether to receive ECU message.If not, thening follow the steps S202；If so, thening follow the steps
S203。
S202, timer add up timing time.Then step S204 is executed.
S203, timer are reset.
S204, judges whether timing time is greater than Cs.If not, thening follow the steps S205；If so, thening follow the steps
S206。
S205 judges that VCU and ECU communication is normal.
S206 judges VCU and ECU communication abnormality.
In one particular embodiment of the present invention, as shown in fig. 6, can by following steps detect full-vehicle control unit with
Communication state between transmission control unit TCU (Transmission Control Unit):
S301, VCU judge whether to receive TCU message.If not, thening follow the steps S302；If so, thening follow the steps
S303。
S302, timer add up timing time.Then step S304 is executed.
S303, timer are reset.
S304, judges whether timing time is greater than Cs.If not, thening follow the steps S305；If so, thening follow the steps
S306。
S305 judges that VCU and TCU communication is normal.
S306 judges VCU and TCU communication abnormality.
In one particular embodiment of the present invention, it assists to change as shown in fig. 7, can judge whether to meet by following steps
Blend stop part:
S401, judges whether engine is currently running, and judges VCU and BSG motor control unit, between ECU, TCU
It whether normal communicates.If so, thening follow the steps S402；If not, thening follow the steps S411.
Whether S402, judges whether vehicle accelerates, and judge the revolving speed of engine more than Brpm.Wherein, B is preset turn
Fast threshold value.If so, thening follow the steps S404；If not, thening follow the steps S403.
S403, judges whether vehicle slows down, and judges whether the revolving speed of engine is down to Arpm.Wherein, A is preset turn
Fast threshold value.If so, thening follow the steps S405；If not, thening follow the steps S408.
S404 judges whether BSG self-test is normal.Wherein, the malfunction of BSG motor and BSG motor control unit can be by
BSG motor control unit automatic running detects program to detect, this process is known as BSG self-test, if BSG motor and BSG motor
The equal fault-free of control unit, then BSG self-test is normal, and step S407 can be performed；If BSG motor or BSG motor control unit hair
Raw failure, then BSG self-test is abnormal, and step S406 can be performed.
S405 judges whether BSG self-test is normal.If so, thening follow the steps S409；If not, thening follow the steps S410.
S406, BSG motor assist shift invalid, and TCU carries out upshift control.That is, being discontented with when BSG self-test exception
Football association helps shift condition, and upshift process at this time is controlled by TCU to be completed.
S407, BSG motor assist upshift.
S408, BSG motor assist shift invalid.Speed is unsatisfactory for assisting shift condition, and BSG motor is changed without assisting
Gear.
S409, BSG motor assist downshift.
S410, BSG motor assist shift invalid, and TCU carries out downshift control.That is, being discontented with when BSG self-test exception
Football association helps shift condition, and downshift process at this time is controlled by TCU to be completed.
S411, BSG motor assist shift invalid.VCU and BSG motor control unit communication abnormality or VCU and ECU communicate
Abnormal or VCU and TCU communication abnormality, i.e., the communication state between each control unit that the execution shift in CAN network controls
It is unsatisfactory for assisting shift condition, BSG motor is shifted gears without assisting, i.e., does not continue to execute the shift controlling party of the embodiment of the present invention
Method.
In one particular embodiment of the present invention, as shown in figure 8, the control for assisting shift can be realized by following steps
System:
S501, BSG motor control unit, which judge whether to receive, assists upshift instruction.If not, thening follow the steps S502；
If so, thening follow the steps S503.
S502, BSG motor control unit judge whether to receive assistance down shift demand.If not, thening follow the steps S504；
If so, thening follow the steps S505.
S503, control BSG motor negative torque operating, is pulled low to first object revolving speed backed off after random for engine speed.Pass through
The operating of BSG motor negative torque is controlled, braking torque is applied to engine, to improve the fall off rate of the revolving speed of engine, until
The revolving speed of engine is reduced to revolving speed corresponding to target gear.It should be appreciated that since BSG motor negative torque operates, in BSG electricity
When machine assists upshift, BSG motor can generate electricity simultaneously, realize the recycling of portion of energy.
S504, BSG motor assist shift invalid, and BSG motor output torque is 0.
S505, control BSG motor positive-torque operating, is pulled up to the second rotating speed of target backed off after random for engine speed.Pass through
The operating of BSG motor positive-torque is controlled, driving torque is applied to engine, to improve the climbing speed of the revolving speed of engine, until
The revolving speed of engine is increased to revolving speed corresponding to target gear.
In conclusion the shift control method of hybrid vehicle according to an embodiment of the present invention, dynamic by obtaining mixing
The speed of power automobile and the revolving speed of engine, and judge whether to meet according to the speed of acquisition and revolving speed and assist shift condition, with
And meet assist shift condition when, for control auxiliary-motor to engine output torque, thereby, it is possible to effectively shorten hybrid power vapour
The shift time of vehicle, improves the driving experience of user, while can also reduce the abrasion to clutch, helps to extend clutch
Service life.
Corresponding above-described embodiment, the present invention also propose a kind of non-transitorycomputer readable storage medium.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, is stored thereon with computer program, when the journey
, it can be achieved that the shift control method for the hybrid vehicle that the above embodiment of the present invention proposes when sequence is executed by processor.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention, by the computer journey for executing its storage
Sequence, can effectively shorten the shift time of hybrid vehicle, improve the driving experience of user, while can also reduce to clutch
The abrasion of device facilitates the service life for extending clutch.
Corresponding above-described embodiment, the present invention also propose a kind of shifting control system of hybrid vehicle.
As shown in figure 9, the shifting control system 100 of the hybrid vehicle of the embodiment of the present invention, including transmission control
Unit 10, control unit of engine 20, full-vehicle control unit 30 and auxiliary-motor control unit 40.
Wherein, transmission control unit 10 is used to obtain the speed of hybrid vehicle；Control unit of engine 20 is used for
Obtain the revolving speed of engine；Full-vehicle control unit 30 is used for
No satisfaction assists shift condition, and generates when meeting and assisting shift condition and assist shifting commands；Auxiliary-motor control unit 40 is used
In receiving and executing assistance shifting commands, to control auxiliary-motor to engine output torque, to accelerate the gear switching of speed changer.
When carrying out shift control, can be confirmed between each control unit for executing shift control in CAN network first
Communication it is whether normal, and whether the final device for executing shift control action break down.Therefore, at of the invention one
In embodiment, full-vehicle control unit 30 can also detect respectively before judging whether to meet assistance shift condition and auxiliary-motor controls
Communication state between unit 40 between control unit of engine 20 and between transmission control unit 10, auxiliary-motor control
Unit 40 processed is also used to detect the malfunction of auxiliary-motor and auxiliary-motor control unit 40, and then full-vehicle control unit 30 can basis
Above-mentioned communication state, malfunction, the speed of hybrid vehicle and engine revolving speed judge whether to meet and assist shift
Condition.
Specifically, when between full-vehicle control unit 30 and auxiliary-motor control unit 40, full-vehicle control unit 30 and engine
Normal and auxiliary-motor and auxiliary-motor are communicated between control unit 20 between full-vehicle control unit 30 and transmission control unit 10
When control unit 40 is without failure, full-vehicle control unit 30 accelerates in hybrid vehicle and the revolving speed of engine is greater than first
When preset rotation speed, judge to meet upshift condition of assisting, and pre- less than second in the revolving speed of hybrid vehicle deceleration and engine
If when revolving speed, judging to meet and assisting downshift condition.
When judgement, which meets, assists upshift condition, full-vehicle control unit 30, which produces, assists upshift instruction, and to auxiliary-motor
Control unit 40, which is sent, assists upshift instruction, and auxiliary-motor control unit 40 receives and executes assistance upshift instruction, to control pair
Motor exports negative torque to engine, so that the fall off rate of the revolving speed of engine is improved, until the revolving speed of engine is reduced to
First object revolving speed, wherein first object revolving speed be downshift after gear corresponding to engine revolving speed.
When judgement, which meets, assists downshift condition, full-vehicle control unit 30, which produces, assists down shift demand, and to auxiliary-motor
Control unit 40, which is sent, assists down shift demand, and auxiliary-motor control unit 40 receives and executes the assistance down shift demand, to control pair
Motor exports positive-torque to engine, so that the climbing speed of the revolving speed of engine is improved, until the revolving speed of engine is increased to
Second rotating speed of target, wherein the second rotating speed of target be upshift after gear corresponding to engine revolving speed.
The further embodiment of the shifting control system of the hybrid vehicle of the embodiment of the present invention can refer to above-mentioned mixed
Content disclosed in the shift control method of power vehicle is closed, details are not described herein.
The shifting control system of hybrid vehicle according to an embodiment of the present invention by transmission control unit and starts
Machine control unit obtains the speed of hybrid vehicle and the revolving speed of engine respectively, and by full-vehicle control unit according to above-mentioned
Speed and revolving speed judge whether to meet shift condition of assisting, and when meeting assistance shift condition, are controlled by auxiliary-motor single
Member control auxiliary-motor thereby, it is possible to effectively shorten the shift time of hybrid vehicle, improves user to engine output torque
Driving experience, while the abrasion to clutch can also be reduced, facilitate the service life for extending clutch.
Corresponding above-described embodiment, the present invention also propose a kind of hybrid vehicle.
As shown in Figure 10, the hybrid vehicle 1000 of the embodiment of the present invention is proposed including the above embodiment of the present invention
The shifting control system 100 of hybrid vehicle.
Hybrid vehicle according to an embodiment of the present invention, can effectively shorten shift time, improve the driving body of user
It tests, while the abrasion to clutch can also be reduced, facilitate the service life for extending clutch.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of shift control method of hybrid vehicle, which is characterized in that the hybrid vehicle includes engine, moves
Force motor, power battery, DC-DC converter, speed changer, the auxiliary-motor being connected with the engine, the engine by from
Clutch and speed changer output power to the wheel of the hybrid vehicle, and the power motor is for outputting driving force to institute
State the wheel of hybrid vehicle, the power battery for giving power motor power supply, the auxiliary-motor respectively with it is described
Power motor, the DC-DC converter are connected with the power battery, and the auxiliary-motor carries out under the drive of the engine
Power generation, the shift control method the following steps are included:
When engine operation, the speed of the hybrid vehicle is obtained by transmission control unit, and pass through hair
Motivation control unit obtains the revolving speed of the engine；
Judge whether to meet according to the revolving speed of the speed of the hybrid vehicle and the engine and assists shift condition；
If meeting the assistance shift condition, full-vehicle control unit, which generates, assists shifting commands, and controls list to auxiliary-motor
Member sends the assistance shifting commands, to control the auxiliary-motor to the engine output torque, to accelerate the speed changer
Gear switching.
2. the shift control method of hybrid vehicle according to claim 1, which is characterized in that further include:
It is detected between the full-vehicle control unit and the auxiliary-motor control unit respectively, the full-vehicle control unit and the hair
Communication state between motivation control unit between the full-vehicle control unit and the transmission control unit；
Detect the malfunction of the auxiliary-motor and the auxiliary-motor control unit；
Sentenced according to the revolving speed of the communication state, the malfunction, the speed of the hybrid vehicle and the engine
It is disconnected whether to meet assistance shift condition.
3. the shift control method of hybrid vehicle according to claim 2, which is characterized in that wherein, when described whole
Between vehicle control unit and the auxiliary-motor control unit, between the full-vehicle control unit and the control unit of engine and
The normal and described auxiliary-motor and auxiliary-motor control are communicated between the full-vehicle control unit and the transmission control unit
When unit is without failure,
If the hybrid vehicle accelerates and the revolving speed of the engine is greater than the first preset rotation speed, judges to meet and assist
Upshift condition；
If the hybrid vehicle slows down and the revolving speed of the engine is less than the second preset rotation speed, judges to meet and assist
Downshift condition.
4. the shift control method of hybrid vehicle according to claim 3, which is characterized in that described in meeting when judgement
When assisting upshift condition, the full-vehicle control unit, which generates, assists upshift instruction, and sends institute to the auxiliary-motor control unit
It states and assists upshift instruction, negative torque is exported to control the auxiliary-motor to the engine, until the revolving speed of the engine drops
Down to first object revolving speed.
5. the shift control method of hybrid vehicle according to claim 3, which is characterized in that described in meeting when judgement
When assisting downshift condition, the full-vehicle control unit, which generates, assists down shift demand, and sends institute to the auxiliary-motor control unit
Assistance down shift demand is stated, positive-torque is exported to control the auxiliary-motor to the engine, until the revolving speed liter of the engine
Up to the second rotating speed of target.
6. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the program quilt
The shift control method of any hybrid vehicle in -5 according to claim 1 is realized when processor executes.
7. a kind of shifting control system of hybrid vehicle, which is characterized in that the hybrid vehicle includes engine, moves
Force motor, power battery, DC-DC converter, speed changer, the auxiliary-motor being connected with the engine, the engine by from
Clutch and speed changer output power to the wheel of the hybrid vehicle, and the power motor is for outputting driving force to institute
State the wheel of hybrid vehicle, the power battery for giving power motor power supply, the auxiliary-motor respectively with it is described
Power motor, the DC-DC converter are connected with the power battery, and the auxiliary-motor carries out under the drive of the engine
Power generation, the shifting control system include:
Transmission control unit, for obtaining the speed of the hybrid vehicle；
Control unit of engine, for obtaining the revolving speed of the engine；
Full-vehicle control unit, for judging whether to meet according to the speed of the hybrid vehicle and the revolving speed of the engine
Shift condition is assisted, and is generated when meeting the assistance shift condition and assists shifting commands；
Auxiliary-motor control unit is started for receiving and executing the assistance shifting commands with controlling the auxiliary-motor to described
Machine output torque, to accelerate the gear switching of the speed changer.
8. the shifting control system of hybrid vehicle according to claim 7, which is characterized in that the full-vehicle control list
Member be also used to detect respectively between the auxiliary-motor control unit between the control unit of engine and with the speed change
Communication state between device control unit, the auxiliary-motor control unit are also used to detect the auxiliary-motor and the auxiliary-motor control
The malfunction of unit processed, the full-vehicle control unit is according to the communication state, the malfunction, the hybrid power vapour
The revolving speed of the speed of vehicle and the engine, which judges whether to meet, assists shift condition.
9. the shifting control system of hybrid vehicle according to claim 8, which is characterized in that wherein, when described whole
Between vehicle control unit and the auxiliary-motor control unit, between the full-vehicle control unit and the control unit of engine and
The normal and described auxiliary-motor and auxiliary-motor control are communicated between the full-vehicle control unit and the transmission control unit
When unit is without failure, the full-vehicle control unit accelerates in the hybrid vehicle and the revolving speed of the engine is greater than
When the first preset rotation speed, judge to meet upshift condition of assisting, and in hybrid vehicle deceleration and turn of the engine
When speed is less than the second preset rotation speed, judges to meet and assist downshift condition.
10. the shifting control system of hybrid vehicle according to claim 9, which is characterized in that the full-vehicle control
Unit is generated when judgement meets the assistance upshift condition assists upshift instruction, and sends institute to the auxiliary-motor control unit
It states and assists upshift instruction, the auxiliary-motor control unit is for receiving and executing the assistance upshift instruction, to control the pair
Motor exports negative torque to the engine, until the revolving speed of the engine is reduced to first object revolving speed.
11. the shifting control system of hybrid vehicle according to claim 9, which is characterized in that the full-vehicle control
Unit is generated when judgement meets the assistance downshift condition assists down shift demand, and sends institute to the auxiliary-motor control unit
Assistance down shift demand is stated, the auxiliary-motor control unit is for receiving and executing the assistance down shift demand, to control the pair
Motor exports positive-torque to the engine, until the revolving speed of the engine is increased to the second rotating speed of target.
12. a kind of hybrid vehicle, which is characterized in that including hybrid power according to any one of claims 7-11
The shifting control system of automobile.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710911836.0A CN109572699B (en) | 2017-09-29 | 2017-09-29 | Hybrid electric vehicle and gear shifting control method and system thereof |
| TW107122273A TW201914874A (en) | 2017-09-29 | 2018-06-28 | Hybrid vehicle and its shift control method and system |
| PCT/CN2018/108537 WO2019062879A1 (en) | 2017-09-29 | 2018-09-29 | Hybrid vehicle and gear-shift control method and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710911836.0A CN109572699B (en) | 2017-09-29 | 2017-09-29 | Hybrid electric vehicle and gear shifting control method and system thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN109572699A true CN109572699A (en) | 2019-04-05 |
| CN109572699B CN109572699B (en) | 2020-10-23 |
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| CN201710911836.0A Active CN109572699B (en) | 2017-09-29 | 2017-09-29 | Hybrid electric vehicle and gear shifting control method and system thereof |
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| Country | Link |
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| CN (1) | CN109572699B (en) |
| TW (1) | TW201914874A (en) |
| WO (1) | WO2019062879A1 (en) |
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| CN110077409A (en) * | 2019-04-23 | 2019-08-02 | 武汉理工大学 | A kind of Series-Parallel HEV dynamic coordinate control method |
| US11236825B1 (en) | 2020-11-12 | 2022-02-01 | Ford Global Technologies, Llc | Operating continuously variable transmission at discrete ratios |
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Also Published As
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| CN109572699B (en) | 2020-10-23 |
| WO2019062879A1 (en) | 2019-04-04 |
| TW201914874A (en) | 2019-04-16 |
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