CN103847729A - Method and device for controlling interference torque in new energy automobile hybrid power system - Google Patents
Method and device for controlling interference torque in new energy automobile hybrid power system Download PDFInfo
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- CN103847729A CN103847729A CN201210514974.2A CN201210514974A CN103847729A CN 103847729 A CN103847729 A CN 103847729A CN 201210514974 A CN201210514974 A CN 201210514974A CN 103847729 A CN103847729 A CN 103847729A
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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
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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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
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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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
- B60W2710/083—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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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)
Abstract
The invention provides a method for controlling interference torque in a new energy automobile hybrid power system. The method comprises the following steps: carrying out transmittal mode of the interference torque; carrying out response urgency identification required by the interference torque; controlling a motor and/or an engine to coordinate and realize the requirement of the interference torque according to the requirement of the interference torque. The invention also provides a method for reasonably controlling the interference torque through the motor and the engine in the new energy automobile hybrid power system, thus the work efficiency of the system is improved, and the emission is reduced by reducing the change of a spark advance angle.
Description
Technical field
The application relates to new-energy automobile hybrid power system control field, specifically, relates to the method and apparatus of controlling interference moment of torsion in new-energy automobile hybrid power system.
Background technology
Hybrid vehicle (Hybrid Electric Vehicle, HEV) can be divided into tandem, parallel and series parallel type according to driving system difference.Plug-in hybrid-power automobile (Plug-in HEV, PHEV) belong to the one of hybrid vehicle, its maximum feature compared with traditional hybrid vehicle is that self installs onboard charger, can directly use grid charging, has reduced the dependence to driving engine.PHEV can grow distance travel under electric-only mode, can reach 30 to 80 kilometers according to the difference of design.Like this, time on and off duty in city, can drive with electric-only mode, contribute to fuel saving, reduce discharge.When needs extra long distance travels, can drive with traditional full combination drive pattern again, realize long continual mileage.
Plug-in hybrid-power automobile can adopt the mode of operation of driving engine and the transmission of double-motor coupling power, comprising HCU(Hybrid Control Unit, hybrid power system control unit), PEB(Power Electric Box, motor control unit), BMS(Battery Management System, battery management system) and EMS(Engine Management System, engine management system).Plug-in hybrid vehicle also can respond ESP(Electronic Stability Program, Electronics stability program as orthodox car) moment of torsion that sends interferes request.
In the automobile of traditional combustion gasoline/diesel, for example, in order to guarantee car load safety (preventing from breakking away) in the time that automobile accelerates, ESP can send a moment of torsion and interfere demand to EMS, and EMS can respond this interference torque demand according to mode of operation.In order to respond as early as possible torque demand, EMS can indicate the spark advance angle by adjusting driving engine to realize this torque demand.In the time that ESP does not have moment of torsion to interfere demand, spark advance angle is generally positioned at optimum state.Once spark advance angle changes, discharge tends to increase, and may cause the phenomenon of catching fire, and also has the risk of pinking, what oil inflame efficiency neither be optimum.
Thereby, be desirable to provide a kind of taking into full account and interfere the response urgency of torque demand, reduce the variation probability of unnecessary spark advance angle and and then optimize the method and apparatus of the control torque of emission effect and system effectiveness.
Summary of the invention
One of object of the application is to provide a kind of improved control to interfere the method and apparatus of moment of torsion.
In a concrete application, the application can be applicable in automobile front drive system.
According to the application aspect, provide in a kind of new-energy automobile hybrid power system and controlled the method for interfering moment of torsion, comprising: receive and interfere torque demand; Determine the response urgency of interfering torque demand;
According to interfering torque responsive urgency, the efficiency of simultaneously taking into account hybrid power system is divided the moment of torsion of realizing of gas-distributing motor and/or driving engine, interferes torque demand thereby realize.
Interfere in the method for moment of torsion in above-mentioned control, described interference torque demand mainly refers to the interference torque demand that derives from ESP.
Interfere in the method for moment of torsion in above-mentioned control, related PHEV new forms of energy hybrid vehicle subsystem comprises ESP, HCU, PEB, BMS and EMS etc.
In the method for above-mentioned control torque, thereby interfere the step of torque demand to comprise according to interfering torque responsive urgency, hybrid power system efficiency to divide gas-distributing motor and/or driving engine to carry out moment of torsion realization:
In the time determining that the response urgency of interference torque demand is high, preferentially control motor and complete described interference torque demand; Interfere torque demand if Motor Capability is not enough to realize, control engine regulates spark advance angle to realize described interference torque demand;
In the time determining that the response urgency of torque demand is low and Motor Capability is enough, preferentially control motor and complete described interference torque demand; If Motor Capability deficiency, control engine adjusting joint valve opening and degrees of ignition advance are realized described interference torque demand.
Interfere in the method for moment of torsion in above-mentioned control, except the response urgency of determined interference torque demand, also control motor according to the mode of operation of hybrid dynamic system and/or driving engine has been coordinated described interference torque demand.
Interfere in the method for moment of torsion in above-mentioned control, hybrid power system mode of operation comprises EV pattern, Parallel pattern, Series pattern, and under EV, Series pattern, controls motor and respond interference torque demand; Under Parallel pattern, control motor and/or driving engine and respond interference torque demand.
Interfere in the method for moment of torsion in above-mentioned control, except the response urgency of determined interference torque demand, also control motor according to the state of parts and/or driving engine has been coordinated described interference torque demand.
Interfere in the method for moment of torsion in above-mentioned control, the in the situation that of Motor Capability and unit status permission, control motor and complete interference torque demand; And in the time that Motor Capability is not enough: in the time determining that the response urgency of interference torque demand is high, control engine is adjusted ignition angle and is assisted motor to complete described interference torque demand; And in the time determining that the response urgency of interference torque demand is low, the throttle gate of control engine and degrees of ignition advance complete described interference torque demand.
Another aspect of the application, also provides the device of control torque in a kind of hybrid power system for automobile, comprising: receiving-member, for receiving interference torque demand; Determining means, for determining the response urgency of described interference torque demand; Arbitration parts, for deciding the actuating unit of described interference torque demand according to the response urgency of determined interference torque demand; Distribution member, for completing motor and/or the driving engine of interfering torque demand to distribute to described new-energy automobile hybrid power system according to the decision of arbitration parts.
In the device of above-mentioned control torque, described arbitration parts decide the actuating unit of described interference torque demand according to the response urgency of determined interference torque demand, the mode of operation of new-energy automobile hybrid power system and the state of parts.
In an embodiment, the application is take plug-in hybrid system as background, to interfere the distribution method of moment of torsion as research object, illustrate how hybrid power system responds the interference torque demand of ESP, and HCU how to coordinate controlling motor and/or driving engine has been coordinated this torque demand.Wherein, HCU can determine the response urgency of torque demand the response urgency according to torque demand decide how to go response.This mode has improved the work efficiency of system, has also reduced the variation probability of unnecessary spark advance angle, and then has reduced discharge simultaneously.In addition, because the speed of response of motor is faster than conventional engines, in the time of the interference moment of torsion with motor response ESP, can respond faster the interference torque request of ESP, improve the safety allowance of vehicle.
Accompanying drawing explanation
Fig. 1 is the method schematic diagram of interfering moment of torsion according to the control of the application embodiment;
Fig. 2 is the action effect figure that interferes moment of torsion under EV, Series pattern;
Fig. 3 is the engine response action effect figure of moment of torsion, fast torque at a slow speed;
Fig. 4 and Fig. 5 are the device schematic diagrams of interfering moment of torsion according to the control of the application embodiment.
The specific embodiment
What introduce below is some in multiple possibility embodiment of the present invention, aims to provide basic understanding of the present invention, is not intended to confirm key of the present invention or conclusive key element or limits claimed scope.Easily understand, according to technical scheme of the present invention, do not changing under connotation of the present invention other implementation that one of ordinary skill in the art can propose mutually to replace.Therefore, below the specific embodiment and accompanying drawing be only the exemplary illustration to technical scheme of the present invention, and should not be considered as of the present invention all or be considered as restriction or the restriction to technical solution of the present invention.
In this article for convenience, the interference torque demand of the speed of will seeking quickness response is called " interfering fast moment of torsion " or " interfering fast torque demand ", and the interference torque demand that does not need response is fast called to " interfering at a slow speed moment of torsion " or " interfering at a slow speed torque demand ".It will be understood by those skilled in the art that can according to the actual conditions of hybrid power system and/or need and interference torque demand is divided into quick interference moment of torsion and interferes at a slow speed moment of torsion.
The application's a embodiment is take plug-in hybrid system as background.Plug-in hybrid system belongs to the strong mixing system that electric energy degree of mixing is higher, has stronger pure electric operational mode and holomorphosis braking potential.Compared with traditional automobile electric control system, HCU has replaced EMS becomes car load power control unit, and the power of power system is arbitrated, distributed and manipulation etc.HCU can be according to operating mode, battery electric quantity, chaufeur demand, that parts state is divided into EV(is pure electronic), Parallel(parallel connection), Series(series connection) pattern.Aspect the processing of interference moment of torsion, HCU substitutes the interference torque demand of EMS response ESP, carries out torque distribution according to system work at present pattern, battery status, motor status etc., controls motor and driving engine and realizes the output of interference moment of torsion.
Fig. 1 shows and controls the method schematic diagram of interfering moment of torsion according to the application embodiment, in new-energy automobile hybrid power system.
In Fig. 1, step S110, receives and interferes torque demand.Interfere the source of torque demand mainly to refer to the interference torque demand that ESP sends in order to guarantee whole vehicle stability.For example, throttle burst while travelling on low adhesion value road surface, may cause vehicle unstable because ground abhesion capacity is limited.At this moment,, in order to guarantee the stability of car load, ESP can send and interfere torque demand to the HCU in hybrid power system for automobile.
At step S120, determine the response urgency of described interference torque demand.Determining step can be carried out by HCU, or can by ESP unit to fast torque and at a slow speed moment of torsion after distinguishing, again torque demand is sent to HCU.
At step S130, control motor and/or driving engine according to the response urgency of determined interference torque demand and coordinate to realize described interference torque demand.For example, in the time being defined as interfering torque demand fast, controlling motor and complete described quick interference moment of torsion.If motor is not enough to realize described quick interference torque demand, control engine regulates ignition angle to assist motor to complete described quick interference torque demand.And in the time being defined as interfering torque demand at a slow speed, if electric weight when sufficient, is controlled motor and interfered at a slow speed moment of torsion described in completing, if Motor Capability deficiency, control engine adjusting joint valve opening and ignition angle are interfered at a slow speed torque demand described in completing.
In another embodiment, because plug-in hybrid system has very strong pure electric service requirement, so under most of state, HCU control traction electric machine completes the major impetus output demand of vehicle.Only in motor power deficiency and chaufeur torque demand is very high or battery electric quantity is low in the situation that, can start the engine outputting power or drive ISG(Integrated Starter and Generator, automobile start power generation all-in-one machine) charge.So under most of operating mode, HCU can control traction electric machine and complete interference torque demand.Because the response time of motor is very fast, so no matter be to interfere fast torque demand or interfere at a slow speed torque demand to have been responded by motor soon.
For the plug-in hybrid system of power resources complexity, the calculating of torque signal and assignment affects tractive performance and the driving performance of vehicle.By unified torque demand and the output of coordinating all parts of HCU, the complexity of resolution system power demand is originated well, and can effectively coordinate the power output of motor and driving engine.
Fig. 3 shows another embodiment according to the application, and the ESP in the time that motor does not have enough abilities interferes torque distribution principle.Now, under specific operation, HCU preferentially controls motor and completes quick interference torque demand, and control engine assists motor to complete remainder torque demand simultaneously, and now driving engine can complete by the adjustment of ignition angle.HCU control engine completes interferes at a slow speed torque demand, driving engine to calculate need to adjust throttle opening and advancing ignition angle to carry out outputting power to remove to respond this part torque demand.
Hybrid power system has multiple-working mode, and under different mode of operations, interferes the implementation of moment of torsion also can be different.
Under EV, Series pattern, main power source is motor.Because motor response time is very short, so be to interfere fast torque demand or interfere at a slow speed torque demand all can be realized by motor.EV pattern is electric-only mode, and all torque demands comprise interferes moment of torsion all to be responded by motor, and driving engine is not worked.And under Series pattern, motor is as propulsion source output and driving engine charges to power supply by ISG, so be also to respond interference torque demand by motor.Referring to Fig. 4, because motor speed of response is very fast, so signal change procedure does not almost have obvious time delay phenomenon.
Under P pattern, vehicle power derives from motor and driving engine, when now driving engine provides power, also charges to battery by ISG.Receiving after interference torque demand, HCU can control motor or driving engine completes interference torque demand.In the time that control engine completes interference torque demand, can realize by adjusting throttle gate and spark advance angle.As shown in Figure 5, because EMS is to interfering the filter action of torque signal and the adjustment process of spark advance angle, the actual interference torque signal transmitting there will be delay to a certain degree.But it is important to point out, in most cases, HCU can regulate motor to respond interference torque demand, and only under rare occasion, just can regulate driving engine to respond.
Fig. 4 and Fig. 5 show according to the device schematic diagram of the control torque of the application embodiment.As shown in Figure 4, HCU520 receives the interference torque demand from ESP510 etc., determine the demand torque assignment problem of hybrid power system by moment of torsion arbitration mechanism, then interfere torque demand according to the state control motor 540 of operational mode and parts and driving engine (or EMS530, engine management system) coordinate responses.
In a specific embodiment, the principle of moment of torsion arbitration mechanism can be: in the time that ESP510 sends interference torque demand, first HCU520 can carry out torque distribution according to system model.If Motor Capability and unit status allow, interfere moment of torsion all can respond by motor, and irrelevant with the response urgency of this interference torque demand.If Motor Capability deficiency, assists response by driving engine.At this moment, the quick interference torque demand of general ESP510 can be responded by motor, and a part interferes at a slow speed torque demand to be completed by adjusting ignition angle and throttle opening by driving engine.
Fig. 5 has provided may form according to the application embodiment, a HCU520.Wherein, can comprise; Receiving-member 610, for receiving interference torque demand; Determining means 620, for determining the response urgency of described interference torque demand; Arbitration parts 630, at least deciding the actuating unit of described interference torque demand according to the response urgency of determined interference torque demand; And distribution member 640, for driving engine and/or the motor of interfering torque demand to distribute to described hybrid power system being completed according to the decision of arbitration parts.
And, in a preferred embodiment, arbitration parts 630 decide the actuating unit of described interference torque demand according to the mode of operation of the response urgency of determined interference torque demand, hybrid power system for automobile, the state of parts and the source of torque demand.
According to the application embodiment, stablize control unit about the vehicle body of interfering the response urgency of torque demand to derive from car chassis system, and the torque demand of non-driver.Those skilled in the art are also appreciated that HCU can not comprise the parts of determining the response urgency of interfering torque demand.For example, can, by chassis stability controller (ESP) oneself judgement, then by it, corresponding mode bit be informed to HCU.
Above example has mainly illustrated the realization of interfering response method and the device of moment of torsion in the application's hybrid power system for automobile.Although only some of them specific embodiment is described, those of ordinary skills should understand, and the present invention can implement not departing from its purport and scope with many other forms.Therefore, the example of showing and embodiment are regarded as illustrative and not restrictive, and in the situation that not departing from the defined spirit of claim and scope, the application may contain various modifications and replacement.
In sum, the HCU in the application's hybrid power system for automobile can decide how to go response according to the response urgency of interfering torque demand.This control interferes the mode of moment of torsion to improve the work efficiency of system, has also reduced the variation probability of unnecessary spark advance angle, and then has optimized emission effect simultaneously.In addition, by responding interference torque demand by the unified all parts of coordinating of HCU, the complexity of resolution system power demand is originated well, and can effectively coordinate the power output of motor and driving engine.
Claims (2)
1. in new-energy automobile hybrid power system, control a method of interfering moment of torsion, comprising:
Receive and interfere torque demand;
Determine the response urgency of interfering torque demand; And
According to interfering response urgency, the hybrid power system efficiency of moment of torsion and optimizing the requirement of discharging and divide gas-distributing motor and/or driving engine to carry out moment of torsion, coordinate described interference torque demand thereby realize,
Wherein, thus divide gas-distributing motor and/or driving engine to carry out moment of torsion according to the requirement of interfering torque responsive urgency, hybrid power system efficiency and optimizing discharge and realize the step of interference torque demand and comprise:
In the time determining that the response urgency of interference torque demand is high, take into account minimizing system emission request simultaneously, preferentially control motor and complete described interference torque demand; If motor is not enough to realize described interference torque demand, control engine regulates spark advance angle to realize described interference torque demand;
In the time determining that the response urgency of interference torque demand is low and Motor Capability is enough, preferentially control motor and complete described interference torque demand; If Motor Capability deficiency, control engine adjusting joint valve opening and advancing ignition angle realize described interference torque demand.
2. in new-energy automobile hybrid power system, control a device of interfering moment of torsion, comprising:
Receiving-member, for receiving torque demand;
Determining means, for determining the response urgency of described torque demand;
Arbitration parts, for deciding the actuating unit of described interference torque demand according to the requirement of the response urgency of determined interference torque demand, hybrid power system efficiency and optimization discharge;
Distribution member, completes for motor and/or the driving engine of torque demand being distributed to described new-energy automobile hybrid power system according to the decision of arbitration parts.
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| CN201210514974.2A CN103847729B (en) | 2012-12-05 | 2012-12-05 | In new-energy automobile hybrid power system, control the method and apparatus of interfering moment of torsion |
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| CN106240402A (en) * | 2016-08-12 | 2016-12-21 | 北京长城华冠汽车科技股份有限公司 | The driving control method of dual-motor electric automobile and device |
| CN109153381A (en) * | 2016-05-12 | 2019-01-04 | 大众汽车有限公司 | Control method, control equipment and hybrid drive device for hybrid drive device |
| CN112758080A (en) * | 2020-06-12 | 2021-05-07 | 长城汽车股份有限公司 | Method, device, controller and storage medium for controlling interference torque of vehicle |
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