CN105946601A - Range extending type electric automobile and electricity generation control method thereof - Google Patents

Range extending type electric automobile and electricity generation control method thereof Download PDF

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Publication number
CN105946601A
CN105946601A CN201610294164.9A CN201610294164A CN105946601A CN 105946601 A CN105946601 A CN 105946601A CN 201610294164 A CN201610294164 A CN 201610294164A CN 105946601 A CN105946601 A CN 105946601A
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China
Prior art keywords
electromotor
target
generated output
rotating speed
request
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Granted
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CN201610294164.9A
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CN105946601B (en
Inventor
金硕
易迪华
王金龙
崔天祥
周金龙
李从心
秦兴权
魏跃远
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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Priority to CN201610294164.9A priority Critical patent/CN105946601B/en
Publication of CN105946601A publication Critical patent/CN105946601A/en
Priority to PCT/CN2016/111366 priority patent/WO2017190510A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/15—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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
    • B60W2710/08—Electric propulsion units
    • B60W2710/081—Speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention discloses a range extending type electric automobile and an electricity generation control method thereof. The method includes the steps that firstly, a target electricity generation power request is received, the current power change step length is obtained according to the current electricity generation power and the target electricity generation power, and the target electricity generation power is subjected to gradient limitation according to the current power change step length; secondly, the target rotation speed of an engine and the target torque of an electric generator are obtained according to the target electricity generation power obtained after gradient limitation; and thirdly, the rotation speed of the engine is controlled according to the obtained target rotation speed of the engine, the torque of the electric generator is controlled according to the obtained target torque of the electric generator, so that a range extender reaches the target electricity generation power obtained after gradient limitation, and the first step is executed again when the target electricity generation power obtained after gradient limitation is reached till the electricity generation power reaches the target electricity generation power corresponding to the target electricity generation power request. By the adoption of the electricity generation control method, the electricity generation power is gradually changed to the target electricity generation power, the electricity generation power is prevented from being increased or decreased suddenly, and the control stability of the range extender is improved.

Description

Stroke-increasing electric automobile and electricity-generating control method thereof
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of stroke-increasing electric automobile and electricity-generating control method thereof.
Background technology
Stroke-increasing electric automobile in correlation technique, there is power oscillation problem, enters in it when distance increasing unit is carried out Generation Control And cause the work of distance increasing unit the most steady.Therefore, the Generation Control of journey device haves much room for improvement.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the one of the present invention Purpose is to propose the electricity-generating control method of a kind of stroke-increasing electric automobile, and this electricity-generating control method makes the generating merit of journey device Rate is gradually increasing with the form of ladder or drops to the target generated output that target generating request is corresponding, it is to avoid generated output Suddenly increase or suddenly subtract, thus improving the stability that distance increasing unit controls, and then improving the driving experience of stroke-increasing electric automobile.
Second object of the present invention is to propose a kind of stroke-increasing electric automobile.
To achieve these goals, the electricity-generating control method of the stroke-increasing electric automobile of first aspect present invention embodiment, including Following steps: S1, when the distance increasing unit of described stroke-increasing electric automobile is in generating operation mode, receives the request of target generated output, And obtain current according to the target generated output that the current generated output of described distance increasing unit is corresponding with the request of described target generated output Power change steps, and with the described current power change step target generating merit to described target generated output request correspondence Rate carries out gradient and limits to obtain the target generated output after gradient limits；S2, the target generating after limiting according to described gradient Power obtains engine target rotating speed and electric generator target torque；S3, electromotor is entered by the engine target rotating speed according to obtaining Row rotating speed control, and according to obtain electric generator target torque electromotor is carried out moment of torsion control so that described distance increasing unit send out Electrical power reaches the target generated output after described gradient limits, and reaches described gradient limit at the generated output of described distance increasing unit During target generated output after system, return and perform step S1, until the generated output of described distance increasing unit reaches the generating of described target The target generated output that power request is corresponding.
The electricity-generating control method of stroke-increasing electric automobile according to embodiments of the present invention, receives the request of target generated output, and root Current power change step is obtained according to the target generated output that current generated output is corresponding with the request of target generated output, and to work as Front power change steps carries out gradient restriction to the target generated output that the request of target generated output is corresponding, and after gradient is limited Target generated output carry out resolving to obtain engine target rotating speed and electric generator target torque, and according to engine target Rotating speed carries out rotating speed control to electromotor, and according to electric generator target torque, electromotor carried out moment of torsion control so that distance increasing unit Generated output reaches the target generated output after gradient limits, and sends out when the generated output of distance increasing unit reaches the target after gradient limits During electrical power, proceed the Generation Control of next power points, until the generated output of distance increasing unit reaches target generated output, This electricity-generating control method makes the generated output of journey device be gradually increasing with the form of ladder or drops to target generating request correspondence Target generated output, it is to avoid the urgency of generated output increases or anxious subtracts, thus improves the stability that distance increasing unit controls, and then Improve the driving experience of stroke-increasing electric automobile.
In one embodiment of the invention, described according to the target generated output acquisition engine target after the restriction of described gradient Rotating speed and electric generator target torque, specifically include: the target after limiting described gradient according to optimal fuel consumption curve is sent out Electrical power carries out resolving to obtain described engine target rotating speed and electric generator target torque.
In one embodiment of the invention, when the request of described target generated output raises request for power, described basis obtains The engine target rotating speed taken carries out rotating speed control to electromotor, and carries out electromotor according to the electric generator target torque obtained Moment of torsion controls, and specifically includes: the rotating speed controlling described electromotor is stepped up according to the first preset rotation speed step-length, so that described The rotating speed of electromotor increases to described engine target rotating speed；When the rotating speed of described electromotor reaches described engine target rotating speed Time, the moment of torsion controlling described electromotor is stepped up according to the first predetermined torque step-length, so that the moment of torsion of described electromotor reaches Described electric generator target torque.
In one embodiment of the invention, when the request of described target generated output reduces request for power, described basis obtains The engine target rotating speed taken carries out rotating speed control to electromotor, and carries out electromotor according to the electric generator target torque obtained Moment of torsion controls, and specifically includes:
In one embodiment of the invention, the moment of torsion controlling described electromotor progressively unloads according to the second predetermined torque step-length, So that the moment of torsion of described electromotor is offloaded to described electric generator target torque；When the moment of torsion of described electromotor reaches described electromotor During target torque, the rotating speed controlling described electromotor gradually reduces according to the second preset rotation speed step-length, so that described electromotor Rotating speed reaches described engine target rotating speed.
In one embodiment of the invention, described reception target generated output is asked, and specifically includes: obtain described extended-range The quick responding power request flag of electric automobile, and judge that described quick responding power request flag is the most effective；When Judge, when described quick responding power request flag is invalid, to receive the request of described target generated output.
In one embodiment of the invention, also include: when judging that described quick responding power request flag is effective, unload Carry the moment of torsion of described electromotor and control the rotating speed that described electromotor keeps current；Judge whether the moment of torsion of described electromotor is less than First predetermined torque；When the moment of torsion of described electromotor is less than described first predetermined torque, control the rotating speed fall of described electromotor Low；When the rotating speed of described electromotor is down to the first preset rotation speed, receive the request of described target generated output.
In one embodiment of the invention, also include: when described distance increasing unit starts successfully, it is judged that described extended-range is electronic Whether the highest level of the current failure information of automobile is less than preset failure rank；Judging the highest of described current failure information When rank is less than described preset failure rank, determines whether whether the direction of rotation of described electromotor is forward, and judge institute Whether state the rotating speed of electromotor more than the second preset rotation speed；It is forward and described generating in the direction of rotation judging described electromotor When the rotating speed of machine is more than described second preset rotation speed, further determine whether to receive emergency shutdown request；Do not receive in judgement To described emergency shutdown ask time, further determine whether to receive shutdown request, and judge described stroke-increasing electric automobile Whether target generated output is more than the first predetermined power；Judging that not receiving described shutdown asks and described target generated output During more than described first predetermined power, control described stroke-increasing electric automobile and enter described generating operation mode.
In one embodiment of the invention, also include: when receive described shut down request or described target generated output be less than Or during equal to described first predetermined power, the moment of torsion controlling described electromotor progressively unloads according to the 3rd predetermined torque step-length；When The moment of torsion of described electromotor is less than described electromotor being controlled such that during the second predetermined torque, described electromotor enters standby shape State；When described electromotor is in described holding state, controls described electromotor and enter idling mode to reduce described electromotor Rotating speed, and unload the moment of torsion of described electromotor when the rotating speed of described electromotor is less than three preset rotation speed, and control described Engine misses.
To achieve these goals, the stroke-increasing electric automobile of second aspect present invention embodiment, including: entire car controller, Distance increasing unit controller and distance increasing unit, wherein, described entire car controller is for sending the request of target generated output to described increasing journey Device controller；Described distance increasing unit controller is used for performing: S1, when the distance increasing unit of described stroke-increasing electric automobile is in generating work During condition, receive the request of target generated output, and the current generated output and described target generated output according to described distance increasing unit please The target generated output asking corresponding obtains current power change step, and with described current power change step to described target The target generated output of generated output request correspondence carries out gradient and limits to obtain the target generated output after gradient limits；S2, Target generated output after limiting according to described gradient obtains engine target rotating speed and electric generator target torque；S3, according to obtaining The engine target rotating speed taken carries out rotating speed control to electromotor, and carries out electromotor according to the electric generator target torque obtained Moment of torsion controls, so that the generated output of described distance increasing unit reaches the target generated output after described gradient limits, and in described increasing When the generated output of journey device reaches the target generated output after described gradient limits, return and perform step S1, until described increasing journey The generated output of device reaches the target generated output that the request of described target generated output is corresponding.
Stroke-increasing electric automobile according to embodiments of the present invention, distance increasing unit controller receives the target generating that entire car controller sends Power request, and obtain current power change according to the target generated output that current generated output is corresponding with the request of target generated output Change step-length, and with current power change step, the target generated output that the request of target generated output is corresponding carried out gradient restriction, And the target generated output after limiting gradient resolves to obtain engine target rotating speed and electric generator target torque, and According to engine target rotating speed, electromotor carried out rotating speed control, and according to electric generator target torque, electromotor is carried out moment of torsion control System is so that the generated output of distance increasing unit reaches the target generated output after gradient limits, when the generated output of distance increasing unit reaches gradient During target generated output after restriction, proceed the Generation Control of next power points, until the generated output of distance increasing unit reaches To target generated output so that the generated output of journey device be gradually increasing with the form of ladder or drop to target generating request right The target generated output answered, it is to avoid the urgency of generated output increases or anxious subtracts, thus improves the stability that distance increasing unit controls, and enters And improve the driving experience of stroke-increasing electric automobile.
In one embodiment of the invention, described distance increasing unit controller specifically for: according to optimal fuel consumption curve pair Target generated output after described gradient limits carries out resolving to obtain described engine target rotating speed and electric generator target torque.
In one embodiment of the invention, when the request of described target generated output raises request for power, described distance increasing unit Controller specifically for: control the rotating speed of described electromotor and be stepped up according to the first preset rotation speed step-length so that described electromotor Rotating speed increase to described engine target rotating speed, when the rotating speed of described electromotor reaches described engine target rotating speed, control The moment of torsion making described electromotor is stepped up according to the first predetermined torque step-length, sends out so that the moment of torsion of described electromotor reaches described Motor target torque.
In one embodiment of the invention, when the request of described target generated output reduces request for power, described distance increasing unit Controller specifically for: control the moment of torsion of described electromotor and progressively unload according to the second predetermined torque step-length so that described electromotor Moment of torsion be offloaded to described electric generator target torque, when the moment of torsion of described electromotor reaches described electric generator target torque, control The rotating speed making described electromotor gradually reduces according to the second preset rotation speed step-length, sends out so that the rotating speed of described electromotor reaches described Motivation rotating speed of target.
In one embodiment of the invention, described distance increasing unit controller specifically for: obtain described stroke-increasing electric automobile Quickly responding power request flag, and judge that described quick responding power request flag is the most effective and described in judgement When quickly responding power request flag is invalid, receive the request of described target generated output.
In one embodiment of the invention, described distance increasing unit controller is additionally operable to: when judging that described quick responding power is asked When flag is effective, unloads the moment of torsion of described electromotor and control the rotating speed that described electromotor keeps current, and in described generating The rotating speed controlling described electromotor when the moment of torsion of machine is less than described first predetermined torque reduces, and the rotating speed at described electromotor When being down to the first preset rotation speed, receive the request of described target generated output.
In one embodiment of the invention, described distance increasing unit controller is additionally operable to: when described distance increasing unit starts successfully, when When judging the highest level of described current failure information less than described preset failure rank, determine whether the rotation of described electromotor Turn whether direction is forward, and judge that whether the rotating speed of described electromotor is more than the second preset rotation speed, and judging described generating The direction of rotation of machine be forward and described electromotor rotating speed more than described second preset rotation speed time, further determine whether receive Ask to emergency shutdown, and when judging not receive the request of described emergency shutdown, further determining whether to receive shutdown please Ask, and judge whether the target generated output of described stroke-increasing electric automobile is more than the first predetermined power, and do not connect in judgement When receiving described shutdown request and described target generated output more than described first predetermined power, control the electronic vapour of described extended-range Car enters described generating operation mode.
In one embodiment of the invention, described distance increasing unit controller is additionally operable to: ask or described when receiving described shutdown When target generated output is less than or equal to described first predetermined power, control the moment of torsion of described electromotor according to the 3rd predetermined torque Step-length progressively unloads, and when the moment of torsion of described electromotor is less than the second predetermined torque, described electromotor is controlled such that institute State electromotor and enter holding state, and when described electromotor is in described holding state, controls described electromotor and enter idle Speed state is to reduce the rotating speed of described electromotor, and sends out described in unloading when the rotating speed of described electromotor is less than three preset rotation speed The moment of torsion of motor, and control described engine misses.
Accompanying drawing explanation
Fig. 1 is the flow chart of the electricity-generating control method of stroke-increasing electric automobile according to an embodiment of the invention；
Fig. 2 is the flow chart of the generating operation mode changing method of the stroke-increasing electric automobile according to one specific embodiment of the present invention；
Fig. 3 is the flow chart of the electricity-generating control method of the stroke-increasing electric automobile according to one specific embodiment of the present invention；
Fig. 4 is the block diagram of stroke-increasing electric automobile according to an embodiment of the invention；
Fig. 5 is the principle schematic being controlled distance increasing unit according to one specific embodiment of the present invention.
Reference:
Entire car controller 100, distance increasing unit controller 200, distance increasing unit 300, engine controller 310, electromotor 320, Engine controller 330 and electromotor 340.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Electricity-generating control method and the electronic vapour of extended-range of the stroke-increasing electric automobile of the embodiment of the present invention are described below in conjunction with the accompanying drawings Car.
Fig. 1 is the flow chart of the electricity-generating control method of stroke-increasing electric automobile according to an embodiment of the invention.Such as Fig. 1 institute Show that the electricity-generating control method of the stroke-increasing electric automobile of the embodiment of the present invention comprises the following steps:
S1, when the distance increasing unit of stroke-increasing electric automobile is in generating operation mode, receives the request of target generated output, and according to increasing The target generated output that the current generated output of journey device is corresponding with the request of target generated output obtains current power change step, with And with current power change step, the target generated output that the request of target generated output is corresponding is carried out gradient restriction to obtain gradient Target generated output after restriction.
Specifically, journey device controller receives the target generated output request that entire car controller sends, and working as according to distance increasing unit The target generated output that front generated output is corresponding with the request of target generated output obtains current power change step, and according to working as Front power change steps carries out gradient restriction to the target generated output that the request of target generated output is corresponding, to obtain gradient restriction After target generated output.Such as, the current generated output of journey device is 100W, sends out when distance increasing unit receives entire car controller After the target generated output (such as, 700W) sent, obtain current power according to current generated output and target generated output and become Change step-length, and (target after i.e. gradient limits generates electricity according to current power change step, target generated output to be limited to 300W Power is 300W), to prevent the urgency of distance increasing unit generated output from increasing.
S2, the target generated output after limiting according to gradient obtains engine target rotating speed and electric generator target torque.
In one embodiment of the invention, step S2 specifically includes: after limiting gradient according to optimal fuel consumption curve Target generated output carry out resolving to obtain engine target rotating speed and electric generator target torque.
Specifically, the target generated output after gradient is limited by distance increasing unit controller according to optimal fuel consumption curve is (such as, 300W) resolve, to obtain engine target rotating speed and the electric generator target torque of correspondence.Wherein, according to optimal fuel oil The engine target rotating speed that consumption rate curve obtains can ensure that the fuel economy of electromotor, bent according to optimal fuel consumption The electric generator target torque that line obtains can ensure that the efficiency optimization of electromotor.
S3, carries out rotating speed control according to the engine target rotating speed obtained, and turns round according to the electromotor target obtained electromotor Square carries out moment of torsion control to electromotor so that the generated output of distance increasing unit reach gradient limit after target generated output, and The generated output of distance increasing unit reach gradient limit after target generated output time, return perform step S1, until distance increasing unit send out Electrical power reaches the target generated output that the request of target generated output is corresponding.
Specifically, distance increasing unit includes electromotor, engine controller, electromotor and engine controller, distance increasing unit controller Engine target rotating speed is sent to engine controller, and electric generator target torque is sent to engine controller, so that Engine controller carries out rotating speed control according to engine target rotating speed to electromotor, makes engine controller according to electromotor mesh Mark rotating speed carries out moment of torsion control to electromotor, so that the generated output of distance increasing unit reaches target generated output after gradient limits. Follow-up continuation carries out gradient restriction and controls the generated output of distance increasing unit and reach the power after gradient limits target generated output, Until the generated output of distance increasing unit reaches the target generated output that the request of target generated output is corresponding, i.e. pass through the embodiment of the present invention Electricity-generating control method make the generated output of journey device be gradually increasing with the form of ladder or to drop to target generating request corresponding Target generated output, it is to avoid the urgency of generated output increases or anxious subtracts.
Below the electricity-generating control method of the embodiment of the present invention is illustrated.
Such as, when journey device controller receives the target generated output request that entire car controller sends, the generated output of journey device For 100W, the target generated output of target generated output request correspondence is 700W.First target generated output is limited to 300W, And power 300W is resolved to obtain corresponding engine target rotating speed and electric generator target torque, thus to electromotor and Electromotor is controlled such that the generated output of distance increasing unit reaches 300W；The most again target generated output is limited to 500W, and Power 500W resolves to obtain corresponding engine target rotating speed and electric generator target torque, thus to electromotor with send out Motor is controlled such that the generated output of distance increasing unit reaches 500W；Finally target generated output is limited to 700W, and to merit Rate 700W carries out resolving to obtain corresponding engine target rotating speed and electric generator target torque, thus to electromotor and electromotor Be controlled such that the generated output of distance increasing unit reaches 700W, i.e. the generated output of distance increasing unit has reached the request of target generated output Corresponding target generated output.It is to say, by the target generated output that the request of target generated output is corresponding is carried out gradient Limit, so that the generated output of distance increasing unit is stepped up or is decreased to the target generating merit that the request of target generated output is corresponding Rate, it is to avoid the urgency of generated output increases or anxious subtracts, and then improves the driving experience of user.
If it addition, the target generated output request (mesh that such as, the request of target generated output is corresponding that entire car controller sends Mark generated output is 1000W) wrong, the target generated output that actually should send should be for 500W, then, if worked as Front generated output is 0W, by the electricity-generating control method of the embodiment of the present invention, can be limited to by target generated output successively 200W, 400W etc., make the generated output of distance increasing unit be slowly increased, and finds that transmission is wrong for entire car controller and provides the time, Such that it is able to avoid generated output that the biggest fluctuation occurs at short notice.
It should be noted that owing to stroke-increasing electric automobile road conditions in the process of moving may be more complicated, entire car controller is sent out The target generated output request sent may can change at any time.Such as, journey device controller receives what entire car controller sent During the request of target generated output, the generated output of journey device is 100W, the target generated output that the request of target generated output is corresponding For 700W.First target generated output is limited to 300W, when the generated output controlling distance increasing unit reaches 300W, if Now have received new target generated output request (corresponding target generated output is 450W), then, next step just with New target generated output is as the criterion, and new target generated output carries out gradient restriction, such as, is limited by target generated output For 375W, it is of course also possible to directly target generated output is limited to 450W.
In an embodiment of the present invention, when the generated output controlling distance increasing unit is raised and lowered, to starting under both of these case The control of machine and electromotor is otherwise varied, raises with regard to generated output below and two kinds of situations of reduction illustrate respectively.
In one embodiment of the invention, when the request of target generated output raises request for power, according to starting of obtaining Machine rotating speed of target carries out rotating speed control to electromotor, and according to the electric generator target torque obtained, electromotor is carried out moment of torsion control, Specifically include: the rotating speed controlling electromotor is stepped up according to the first preset rotation speed step-length, so that the rotating speed of electromotor increases to Engine target rotating speed；When the rotating speed of electromotor reaches engine target rotating speed, the moment of torsion controlling electromotor is pre-according to first If moment of torsion step-length is stepped up, so that the moment of torsion of electromotor reaches electric generator target torque.
Specifically, when the request of target generated output raises request for power, namely current generated output generates electricity less than target During target generated output corresponding to power request, the rotating speed first controlling electromotor steps up according to the first preset rotation speed step-length So that the rotating speed of electromotor increases to engine target rotating speed, during electromotor is carried out rotating speed control, judge electromotor The absolute value of difference of rotating speed and this engine target rotating speed whether less than first threshold, then think if less than first threshold and send out The rotating speed of motivation has reached engine target rotating speed, the follow-up loading that electromotor can carry out moment of torsion；If electromotor Rotating speed is not reaching to engine target rotating speed, then can not carry out the loading of moment of torsion, prevents torque overload from causing the rotating speed of electromotor Control shakiness even to invert.If it addition, the rotating speed of electromotor the most all can not reach engine target moment of torsion, then should be to Distance increasing unit controller report fault.
Further, when the rotating speed judging electromotor reaches engine target rotating speed, then illustrate now can carry out moment of torsion Load, then, control electromotor moment of torsion progressively load according to the second predetermined torque step-length, when judge electromotor moment of torsion and When the absolute value of the difference of electric generator target torque is less than Second Threshold, then it is assumed that the moment of torsion of electromotor reaches electric generator target torque, Follow-up, the control of next power points can be carried out, i.e. continue the target generated output to the request of target generated output is corresponding and enter Row gradient limits, and is controlled distance increasing unit, until the generated output of distance increasing unit reaches mesh according to the power after gradient restriction The target generated output that mark generated output request is corresponding.If it addition, the moment of torsion of electromotor the most all can not reach electromotor Target torque, then should be to distance increasing unit controller report fault.
In one embodiment of the invention, when the request of target generated output reduces request for power, according to starting of obtaining Machine rotating speed of target carries out rotating speed control to electromotor, and according to the electric generator target torque obtained, electromotor is carried out moment of torsion control, Specifically include: the moment of torsion controlling electromotor progressively unloads according to the second predetermined torque step-length, so that the moment of torsion of electromotor is offloaded to Electric generator target torque；When the moment of torsion of electromotor reaches electric generator target torque, the rotating speed controlling electromotor is pre-according to second If rotating speed step-length gradually reduces, so that the rotating speed of electromotor reaches engine target rotating speed.
Specifically, when the request of target generated output reduces request for power, namely current generated output generates electricity more than target During target generated output corresponding to power request, the moment of torsion controlling electromotor progressively unload according to the second predetermined torque step-length so that The moment of torsion of described electromotor is offloaded to described electric generator target torque, control electromotor unloading moment of torsion during if it is determined that The moment of torsion of electromotor is less than the 3rd threshold value with the absolute value of the difference of electric generator target torque, then it is assumed that the moment of torsion of electromotor reaches Electric generator target torque, the follow-up reduction that electromotor can carry out rotating speed controls, if the moment of torsion of electromotor is long-time All can not reach electric generator target torque, then should be to distance increasing unit controller report fault.
Further, when the moment of torsion judging electromotor has reached electric generator target torque, then illustrating now can be to starting Machine carries out the reduction of rotating speed and controls, and the rotating speed of control electromotor is according to the second preset rotation speed step-length progressively reduction of speed, when judging to start When the absolute value of the difference of the rotating speed of machine and engine target rotating speed is less than four threshold values, then it is assumed that the rotating speed of electromotor has reached to send out Motivation rotating speed of target, follow-up, the control of next power points can be carried out, i.e. continue target generated output request correspondence Target generated output carries out gradient restriction, and is controlled distance increasing unit according to the power after gradient restriction, until distance increasing unit Generated output reaches the target generated output that the request of target generated output is corresponding.If it addition, the rotating speed of electromotor is long-time all Engine target rotating speed can not be reached, then should be to distance increasing unit controller report fault.
In an embodiment of the present invention, when the rotating speed of electromotor is controlled, it is all that the rotating speed controlling electromotor is according to one Fixed step-length is gradually increasing or declines, thus ensure that the steady security control of distance increasing unit；Similarly, in the torsion to electromotor When square is controlled, it is all that the moment of torsion controlling electromotor is gradually increasing according to certain step-length or declines, thus ensure that increasing journey The steady security control of device.
In one embodiment of the invention, receive the request of target generated output, specifically include: obtain stroke-increasing electric automobile Quick responding power request flag, and judge quick responding power request flag the most effective；When judging quickly response When power request flag is invalid, receive the request of target generated output.
Further, also include: when judging that quick responding power request flag is effective, unload the moment of torsion of set generator and control Electromotor processed keeps current rotating speed；Judge that whether the moment of torsion of electromotor is less than the first predetermined torque；When the moment of torsion of electromotor is little When the first predetermined torque, the rotating speed controlling electromotor reduces；When the rotating speed of electromotor is down to the first preset rotation speed, receive Target generated output is asked.
Specifically, in the power generation process of distance increasing unit, it may occur however that distance increasing unit output generated output is excessive, can cause battery mistake Situation about filling, entire car controller then basis arranges quick responding power request flag, works as judgement the judgement of vehicle condition information Going out above-mentioned situation when can occur, quick responding power request flag is set to effectively, when judging above-mentioned feelings by entire car controller When condition will not occur, then it is invalid quick responding power request flag to be set to.Distance increasing unit controller then receives full-vehicle control The quick responding power request flag that device sends, when the quick responding power request flag received is effective, the soonest Speed responds, and prevents over-charging of battery, to ensure the safety of car load.
More specifically, when distance increasing unit controller judges that quick responding power request flag is effective, uninstall generating immediately The moment of torsion of machine, simultaneously in order to ensure that the stability contorting of distance increasing unit, to promote the driving experience of user, is unloading generator torque Meanwhile, keep electromotor to maintain current rotating speed constant, when the moment of torsion judging electromotor is offloaded to the first predetermined torque, control The rotating speed of electromotor is progressively down to the first preset rotation speed according to certain step-length, then please according to the target power generating received Ask and distance increasing unit is carried out Generation Control.When distance increasing unit controller judges that quick responding power request flag is invalid, receive Target power generating request, and according to the target power generating request received, distance increasing unit is carried out Generation Control.Wherein, send out Electric control method has been described in detail in embodiment above, does not repeats them here.
In one embodiment of the invention, also include: when distance increasing unit starts successfully, it is judged that working as of stroke-increasing electric automobile Whether the highest level of prior fault information is less than preset failure rank；Judging that the highest level of current failure information is less than presetting During fault rank, determine whether whether the direction of rotation of electromotor is forward, and judge that the rotating speed of electromotor is whether more than the Two preset rotation speed；When the rotating speed that direction of rotation is forward and electromotor judging electromotor is more than the second preset rotation speed, enter one Step judges whether to receive emergency shutdown request；When judging not receive emergency shutdown request, further determine whether to receive To the request of shutting down, and judge that whether the target generated output of stroke-increasing electric automobile is more than the first predetermined power；Do not connect in judgement When receiving shutdown request and target generated output more than the first predetermined power, control stroke-increasing electric automobile and enter generating operation mode.
Specifically, in order to promote the safety of generating operation mode, the target that distance increasing unit controller sends at response entire car controller is sent out Before electrical power request, the first safety to generating judges.First, distance increasing unit controller is judging that distance increasing unit starts After success, receive entire car controller, engine controller and the fault message of engine controller feedback, and to these faults Information carries out integrating judgement, show that current failure is highest, and the only current failure superlative degree can allow operation less than journey device Just carry out next step during fault rank (i.e. preset failure circle) to judge, otherwise, perform at once to lay down generator torque The emergency shutdown action shut down with order engine misses, wherein, faulty shutdown in time is in order at security of system consideration.
Further, when the highest level judging current failure information can allow, less than journey device, the fault rank run, increase Journey device controller receives direction of rotation signal and the current tach signal of electromotor of the electromotor of engine controller feedback, goes forward side by side Row electromotor forward direction judges and generator speed threshold decision, only electromotor are run and the current rotating speed of electromotor for rotating forward During more than the second preset rotation speed, just can carry out next step and judge, perform the most at once to lay down generator torque and order electromotor The flame-out emergency shutdown action shut down, the generator speed herein carried out judges to be to ensure that electromotor is before having reversal trend Can shut down in time when also having torque command, it is ensured that electromotor can not invert operation when oil spout is lighted a fire, and otherwise can damage and start Machine.
Further, when judging electromotor as rotating forward operation and the current rotating speed of electromotor more than the second preset rotation speed, it is judged that Whether receive the emergency shutdown request that entire car controller sends, when only not having emergency shutdown to ask, be allowed for access next step Judge, otherwise, perform at once to lay down generator torque and the emergency shutdown action of order engine misses shutdown.
Further, when being not received by emergency shutdown request, it may be judged whether receive the shutdown that entire car controller sends Ask and judge whether target generated output is more than the first predetermined power, only at the request of not shutting down and target generated output During more than 0kW (the i.e. first predetermined power), generating operation mode of being allowed for access, and enter according to electricity-generating control method control distance increasing unit Row generating, otherwise, carries out shutdown action, is described in detail shutdown action below.
In one embodiment of the invention, also include: when receiving shutdown request or target generated output less than or equal to the During one predetermined power, the moment of torsion controlling electromotor progressively unloads according to the 3rd predetermined torque step-length；When the moment of torsion of electromotor is less than During the second predetermined torque, electromotor being controlled such that, electromotor enters holding state；When electromotor is in holding state, Control electromotor and enter the idling mode rotating speed with reduction electromotor, and unload when the rotating speed of electromotor is less than three preset rotation speed The moment of torsion of set generator, and control engine misses.
Specifically, when receiving shutdown request or target generated output≤0kW, illustrate that this moment has required Cheng Qiting Machine, but owing to electromotor also has moment of torsion control, the most first allow electromotor carry out moment of torsion Unloading Control according to certain gradient, its In, while gradient is disposed to ensure electromotor and generator speed stability contorting, lay down load smoothly for electromotor.
More specifically, the moment of torsion controlling electromotor progressively unloads according to the 3rd predetermined torque step-length, and unload at the moment of torsion of electromotor When being loaded onto less than the second predetermined torque, then it is believed that the moment of torsion of electromotor is the most steadily laid down, i.e. electromotor is the most non-loaded, Distance increasing unit controller sends standby command to engine controller, standby to control electromotor, standby when judging that electromotor is in During state, send idling order to engine controller, carry out the rotating speed reduction control of electromotor, electromotor, it is ensured that start The rotating speed of machine and electromotor is entered slow-speed of revolution running status by high rotating speed, when the rotating speed of electromotor is decreased to less than the 3rd preset rotation speed Time, all torsion torque the order engine misses of laying down electromotor immediately are shut down.
Fig. 2 is the flow chart of the generating operation mode changing method of the stroke-increasing electric automobile according to one specific embodiment of the present invention. As in figure 2 it is shown, the method comprises the following steps:
S101, it is judged that distance increasing unit has started successfully.
S102, receives entire car controller VCU, engine controller EMS and the fault message of engine controller GCU feedback, And whether the highest level of failure judgement can allow, less than distance increasing unit, the fault rank run if it is, perform S103, if No, perform S113.
S103, it may be judged whether meet: the direction of rotation of electromotor is for rotating forward and generator speed > the second preset rotation speed.If it is, Perform S104, if it does not, perform S113.
S104, it may be judged whether do not receive the emergency shutdown request that entire car controller sends.If it is, perform S105, if No, perform S113.
S105, it may be judged whether meet: do not receive shutdown request and target generated output that entire car controller sends > 0kW.As Fruit is, performs S106, if it does not, perform S107.
S106, sends out strategy automatically controlled according to increasing journey distance increasing unit is carried out Generation Control.
I.e. according to the electricity-generating control method of the embodiment of the present invention, distance increasing unit is carried out Generation Control.
S107, controls electromotor and progressively unloads moment of torsion according to the 3rd predetermined torque step-length.
S108, it is judged that whether the moment of torsion of electromotor is less than the second predetermined torque.If it is, perform S109, if it does not, perform S107。
S109, sends electromotor standby command to engine controller.
S110, it is judged that whether Generator Status is holding state.If it is, perform S111, if it does not, perform S109.
S111, sends engine idle order to engine controller.
S112, it is judged that whether the rotating speed of electromotor is less than the 3rd preset rotation speed.If it is, perform S113, if it does not, perform S111。
S113, lays down the moment of torsion of electromotor immediately, and controls engine misses shutdown.
Fig. 3 is the flow chart of the electricity-generating control method of the stroke-increasing electric automobile according to one specific embodiment of the present invention.Such as figure Shown in 3, this electricity-generating control method comprises the following steps:
S201, receives the quick responding power request flag position that entire car controller VCU sends.
S202, it is judged that quickly responding power request flag position is invalid？If it is, perform S206, if it does not, perform S203.
S203, unloads generator torque immediately, and keeps the current rotating speed of electromotor constant.
S204, it is judged that the moment of torsion of electromotor is offloaded to less than the first predetermined torque？If it is, perform S205, if it does not, hold Row S203.
S205, the rotating speed controlling electromotor is progressively down to the first preset rotation speed.
I.e. control the rotating speed of electromotor according to certain step-length gradually reduction of speed.
S206, receives the target generated output request of VCU.
S207, carries out gradient restriction to the target generated output that the request of target generated output is corresponding.
Specifically, obtain current power according to the target generated output that current generated output is corresponding with the request of target generated output to become Change step-length, and according to current power change step, the target generated output that the request of target generated output is corresponding carried out gradient restriction, To obtain the target generated output after gradient limits.
S208, it is judged that whether the request of target generated output is that power raises request.If it is, perform S209, if it does not, hold Row S215.
S209, the target generated output after limiting gradient according to optimal fuel consumption curve resolves to obtain electromotor Rotating speed of target.
S210, the rotating speed controlling electromotor is stepped up according to the first preset rotation speed step-length.
S211, it is judged that whether actual engine speed is less than first threshold with the deviation of engine target rotating speed？If it is, hold Row S212, if it does not, perform S209.
S212, the target generated output after limiting gradient according to optimal fuel consumption curve resolves to obtain electromotor Target torque.
S213, the moment of torsion controlling electromotor is stepped up according to the first predetermined torque step-length.
S214, it is judged that whether electromotor actual torque is less than Second Threshold with the deviation of electric generator target torque？If it is, hold Row S201, if it does not, perform S212.
S215, the target generated output after limiting gradient according to optimal fuel consumption curve resolves to obtain electromotor Target torque.
S216, the moment of torsion controlling electromotor progressively unloads according to the second predetermined torque step-length.
S217, it is judged that whether electromotor actual torque is less than the 3rd threshold value with the deviation of electric generator target torque？If it is, hold Row S218, if it does not, perform S215.
S218, the target generated output after limiting gradient according to optimal fuel consumption curve resolves to obtain electromotor Rotating speed of target.
S219, the rotating speed controlling electromotor gradually reduces according to the second preset rotation speed step-length.
S220, it is judged that whether actual engine speed and engine target rotating speed starve deviation less than the 4th threshold value？If it is, hold Row S201, if it does not, perform S218.
The electricity-generating control method of the stroke-increasing electric automobile of the embodiment of the present invention, receives the request of target generated output, and according to working as The target generated output that front generated output is corresponding with the request of target generated output obtains current power change step, and with current merit Rate change step carries out gradient restriction to the target generated output that the request of target generated output is corresponding, and to the mesh after gradient restriction Mark generated output carries out resolving to obtain engine target rotating speed and electric generator target torque, and according to engine target rotating speed Electromotor is carried out rotating speed control, and according to electric generator target torque, electromotor is carried out moment of torsion control so that the generating of distance increasing unit Power reaches the target generated output after gradient limits, when the generated output of distance increasing unit reaches the target generating merit after gradient limits During rate, proceed the Generation Control of next power points, until the generated output of distance increasing unit reaches target generated output, should Electricity-generating control method makes the generated output of journey device be gradually increasing with the form of ladder or drops to target generating request correspondence Target generated output, it is to avoid the urgency of generated output increases or anxious subtracts, thus improves the stability that distance increasing unit controls, Jin Erti Rise the driving experience of stroke-increasing electric automobile.
In order to realize above-described embodiment, the invention allows for a kind of stroke-increasing electric automobile.
Fig. 4 is the block diagram of stroke-increasing electric automobile according to an embodiment of the invention.As shown in Fig. 4 institute, increase journey Formula electric automobile includes: entire car controller 100, distance increasing unit controller 200 and distance increasing unit 300.
Entire car controller 100 is for sending the request of target generated output to distance increasing unit controller 200.
Distance increasing unit controller 200 is used for performing: S1, when the distance increasing unit of stroke-increasing electric automobile is in generating operation mode, receives Target generated output is asked, and generates electricity merit according to the target that the current generated output of distance increasing unit is corresponding with the request of target generated output Rate obtains current power change step, and generates electricity, with current power change step, the target that the request of target generated output is corresponding Power carries out gradient and limits to obtain the target generated output after gradient limits；S2, the target generating merit after limiting according to gradient Rate obtains engine target rotating speed and electric generator target torque；S3, electromotor is carried out by the engine target rotating speed according to obtaining Rotating speed controls, and according to the electric generator target torque obtained, electromotor is carried out moment of torsion control, so that the generated output of distance increasing unit Reach the target generated output after gradient limits, and the target generated output after the generated output of distance increasing unit reaches gradient restriction Time, return and perform S1, until the generated output of distance increasing unit reaches the target generated output that the request of target generated output is corresponding.
If Fig. 5 is the principle schematic being controlled distance increasing unit according to one specific embodiment of the present invention.As it is shown in figure 5, Distance increasing unit 300 includes engine controller 310, electromotor 320, engine controller 330 and electromotor 340.Electromotor 320 are controlled by engine controller 310, and electromotor 340 is controlled by engine controller 330, electromotor control Device 310 processed and engine controller 330 are controlled by distance increasing unit controller 200, and distance increasing unit controller 200 is by car load control Device 100 processed is controlled.
In one embodiment of the invention, distance increasing unit controller 200 specifically for: according to optimal fuel consumption curve pair Target generated output after gradient limits carries out resolving to obtain engine target rotating speed and electric generator target torque.
In one embodiment of the invention, when the request of target generated output raises request for power, distance increasing unit controller 200 Specifically for: the rotating speed controlling electromotor is stepped up so that the rotating speed of electromotor increases to send out according to the first preset rotation speed step-length Motivation rotating speed of target, when the rotating speed of electromotor reaches engine target rotating speed, the moment of torsion controlling electromotor is preset according to first Moment of torsion step-length is stepped up, so that the moment of torsion of electromotor reaches electric generator target torque.
In one embodiment of the invention, when the request of target generated output reduces request for power, distance increasing unit controller 200 Specifically for: the moment of torsion controlling electromotor progressively unloads so that the moment of torsion of electromotor is offloaded to send out according to the second predetermined torque step-length Motor target torque, when the moment of torsion of electromotor reaches electric generator target torque, the rotating speed controlling electromotor is preset according to second Rotating speed step-length gradually reduces, so that the rotating speed of electromotor reaches engine target rotating speed.
In one embodiment of the invention, distance increasing unit controller 200 specifically for: obtain stroke-increasing electric automobile quick Responding power request flag, and judge that quick responding power request flag is the most effective, and judging quick responding power When request flag is invalid, receive the request of target generated output.
Further, distance increasing unit controller 200 is additionally operable to: when judging that quick responding power request flag is effective, unloading The moment of torsion of electromotor also controls the rotating speed that electromotor keeps current, and control when the moment of torsion of electromotor is less than the first predetermined torque The rotating speed of electromotor reduces, and when the rotating speed of electromotor is down to the first preset rotation speed, receives the request of target generated output.
In one embodiment of the invention, distance increasing unit controller 200 is additionally operable to: when distance increasing unit starts successfully, work as judgement When the highest level of current failure information is less than preset failure rank, determine whether whether the direction of rotation of electromotor is forward, And judge that whether the rotating speed of electromotor is more than the second preset rotation speed, and be forward and electromotor in the direction of rotation judging electromotor Rotating speed more than the second preset rotation speed time, further determine whether to receive emergency shutdown request, and tight judging not receive During the request of jerk machine, further determine whether to receive shutdown request, and judge the target generated output of stroke-increasing electric automobile Whether more than the first predetermined power, and do not receive shutdown request and target generated output more than the first predetermined power in judgement Time, control stroke-increasing electric automobile and enter generating operation mode.
In one embodiment of the invention, distance increasing unit controller 200 is additionally operable to: when receiving shutdown request or target generating When power is less than or equal to the first predetermined power, the moment of torsion controlling electromotor progressively unloads according to the 3rd predetermined torque step-length, and When the moment of torsion of electromotor is less than the second predetermined torque, electromotor being controlled such that, electromotor enters holding state, Yi Ji When electromotor is in holding state, controls electromotor and enter the idling mode rotating speed with reduction electromotor, and turning at electromotor Unload the moment of torsion of set generator when speed is less than three preset rotation speed, and control engine misses.
It should be noted that part not deployed in the stroke-increasing electric automobile of the embodiment of the present invention, it is referred to above implement The corresponding part of the electricity-generating control method of example, is no longer developed in details at this.
The stroke-increasing electric automobile of the embodiment of the present invention, distance increasing unit controller receives the target generated output that entire car controller sends Request, and obtain current power change step according to the target generated output that current generated output is corresponding with the request of target generated output Long, and with current power change step, the target generated output that the request of target generated output is corresponding is carried out gradient restriction, and right Target generated output after gradient limits carries out resolving to obtain engine target rotating speed and electric generator target torque, and according to Engine target rotating speed carries out rotating speed control to electromotor, and according to electric generator target torque electromotor carried out moment of torsion control with The generated output making distance increasing unit reaches the target generated output after gradient limits, and limits when the generated output of distance increasing unit reaches gradient After target generated output time, proceed the Generation Control of next power points, until the generated output of distance increasing unit reaches mesh Mark generated output so that the generated output of journey device is gradually increasing with the form of ladder or drops to target generating request correspondence Target generated output, it is to avoid the urgency of generated output increases or anxious subtracts, thus improves the stability that distance increasing unit controls, Jin Erti Rise the driving experience of stroke-increasing electric automobile.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " etc. instruction orientation or position relationship be based on Orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplify description rather than instruction or hint institute The device that refers to or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this Bright restriction.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed Or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two Individual, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two The connection of individual element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common for this area For technical staff, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can Being that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, the One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or Oblique upper, or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or it is special to be merely representative of first Levy level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, ability The feature of the different embodiments described in this specification or example and different embodiment or example can be entered by the technical staff in territory Row combines and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary, Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment It is changed, revises, replaces and modification.

Claims (16)

1. the electricity-generating control method of a stroke-increasing electric automobile, it is characterised in that comprise the following steps:
S1, when the distance increasing unit of described stroke-increasing electric automobile is in generating operation mode, receives the request of target generated output, and root The target generated output corresponding with the request of described target generated output according to the current generated output of described distance increasing unit obtains current power Change step, and with described current power change step, the target generated output that the request of described target generated output is corresponding is entered Row gradient limits to obtain the target generated output after gradient limits；
S2, the target generated output after limiting according to described gradient obtains engine target rotating speed and electric generator target torque；
S3, carries out rotating speed control according to the engine target rotating speed obtained, and turns round according to the electromotor target obtained electromotor Square carries out moment of torsion control to electromotor, so that the generated output of described distance increasing unit reaches the target generating merit after described gradient limits Rate, and when the generated output of described distance increasing unit reaches the target generated output after described gradient limits, return and perform step S1, Until the generated output of described distance increasing unit reaches the target generated output that the request of described target generated output is corresponding.
2. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 1, it is characterised in that described in described basis Target generated output after gradient limits obtains engine target rotating speed and electric generator target torque, specifically includes:
Target generated output after limiting described gradient according to optimal fuel consumption curve resolves and starts described in obtaining Machine rotating speed of target and electric generator target torque.
3. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 2, it is characterised in that when described target is sent out When electrical power request raises request for power, the described engine target rotating speed according to acquisition carries out rotating speed control to electromotor, And according to the electric generator target torque obtained, electromotor is carried out moment of torsion control, specifically include:
The rotating speed controlling described electromotor is stepped up according to the first preset rotation speed step-length, so that the rotating speed of described electromotor increases To described engine target rotating speed；
When the rotating speed of described electromotor reaches described engine target rotating speed, the moment of torsion controlling described electromotor is pre-according to first If moment of torsion step-length is stepped up, so that the moment of torsion of described electromotor reaches described electric generator target torque.
4. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 2, it is characterised in that when described target is sent out When electrical power request reduces request for power, the described engine target rotating speed according to acquisition carries out rotating speed control to electromotor, And according to the electric generator target torque obtained, electromotor is carried out moment of torsion control, specifically include:
The moment of torsion controlling described electromotor progressively unloads according to the second predetermined torque step-length, so that the moment of torsion unloading of described electromotor To described electric generator target torque；
When the moment of torsion of described electromotor reaches described electric generator target torque, the rotating speed controlling described electromotor is pre-according to second If rotating speed step-length gradually reduces, so that the rotating speed of described electromotor reaches described engine target rotating speed.
5. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 1, it is characterised in that described reception target Generated output is asked, and specifically includes:
Obtain the quick responding power request flag of described stroke-increasing electric automobile, and judge that described quick responding power is asked Flag is the most effective；
When judging that described quick responding power request flag is invalid, receive the request of described target generated output.
6. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 5, it is characterised in that also include:
When judge described quick responding power request flag effective time, unload described electromotor moment of torsion and control described in start Machine keeps current rotating speed；
Judge that whether the moment of torsion of described electromotor is less than the first predetermined torque；
When the moment of torsion of described electromotor is less than described first predetermined torque, the rotating speed controlling described electromotor reduces；
When the rotating speed of described electromotor is down to the first preset rotation speed, receive the request of described target generated output.
7. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 1, it is characterised in that also include:
When described distance increasing unit starts successfully, it is judged that whether the highest level of the current failure information of described stroke-increasing electric automobile Less than preset failure rank；
When the highest level judging described current failure information is less than described preset failure rank, determine whether described generating Whether the direction of rotation of machine is forward, and judges that whether the rotating speed of described electromotor is more than the second preset rotation speed；
When the rotating speed that direction of rotation is forward and described electromotor judging described electromotor is more than described second preset rotation speed, Further determine whether to receive emergency shutdown request；
When judging not receive the request of described emergency shutdown, further determine whether to receive shutdown request, and judge described Whether the target generated output of stroke-increasing electric automobile is more than the first predetermined power；
When judging not receive described shutdown request and described target generated output more than described first predetermined power, control institute State stroke-increasing electric automobile and enter described generating operation mode.
8. the electricity-generating control method of stroke-increasing electric automobile as claimed in claim 7, it is characterised in that also include:
When receiving described shutdown request or described target generated output less than or equal to described first predetermined power, control institute The moment of torsion stating electromotor progressively unloads according to the 3rd predetermined torque step-length；
When the moment of torsion of described electromotor is less than the second predetermined torque, described electromotor is controlled such that described electromotor enters Holding state；
When described electromotor is in described holding state, controls described electromotor and enter idling mode to reduce described electromotor Rotating speed, and unload the moment of torsion of described electromotor when the rotating speed of described electromotor is less than three preset rotation speed, and control described Engine misses.
9. a stroke-increasing electric automobile, it is characterised in that including: entire car controller, distance increasing unit controller and distance increasing unit, Wherein,
Described entire car controller is for sending the request of target generated output to described distance increasing unit controller；
Described distance increasing unit controller is used for performing:
S1, when the distance increasing unit of described stroke-increasing electric automobile is in generating operation mode, receives the request of described target generated output, And obtain current according to the target generated output that the current generated output of described distance increasing unit is corresponding with the request of described target generated output Power change steps, and with the described current power change step target generating merit to described target generated output request correspondence Rate carries out gradient and limits to obtain the target generated output after gradient limits；S2, the target generating after limiting according to described gradient Power obtains engine target rotating speed and electric generator target torque；S3, electromotor is entered by the engine target rotating speed according to obtaining Row rotating speed control, and according to obtain electric generator target torque electromotor is carried out moment of torsion control so that described distance increasing unit send out Electrical power reaches the target generated output after described gradient limits, and reaches described gradient limit at the generated output of described distance increasing unit During target generated output after system, return and perform S1, until the generated output of described distance increasing unit reaches described target generated output The target generated output that request is corresponding.
10. stroke-increasing electric automobile as claimed in claim 9, it is characterised in that described distance increasing unit controller specifically for: Target generated output after limiting described gradient according to optimal fuel consumption curve resolves to obtain described electromotor mesh Mark rotating speed and electric generator target torque.
11. stroke-increasing electric automobiles as claimed in claim 10, it is characterised in that when the request of described target generated output is Power raise request time, described distance increasing unit controller specifically for:
The rotating speed controlling described electromotor is stepped up so that the rotating speed of described electromotor increases to according to the first preset rotation speed step-length Described engine target rotating speed, when the rotating speed of described electromotor reaches described engine target rotating speed, controls described electromotor Moment of torsion be stepped up according to the first predetermined torque step-length, so that the moment of torsion of described electromotor reaches described electric generator target torque.
12. stroke-increasing electric automobiles as claimed in claim 10, it is characterised in that when the request of described target generated output is Power reduce request time, described distance increasing unit controller specifically for:
The moment of torsion controlling described electromotor progressively unloads so that the moment of torsion of described electromotor is offloaded to according to the second predetermined torque step-length Described electric generator target torque, when the moment of torsion of described electromotor reaches described electric generator target torque, controls described electromotor Rotating speed gradually reduce according to the second preset rotation speed step-length, so that the rotating speed of described electromotor reaches described engine target rotating speed.
13. stroke-increasing electric automobiles as claimed in claim 9, it is characterised in that described distance increasing unit controller specifically for:
Obtain the quick responding power request flag of described stroke-increasing electric automobile, and judge that described quick responding power is asked Flag is the most effective, and when judging that described quick responding power request flag is invalid, receives described target generated output Request.
14. stroke-increasing electric automobiles as claimed in claim 13, it is characterised in that described distance increasing unit controller is additionally operable to:
When judge described quick responding power request flag effective time, unload described electromotor moment of torsion and control described in start Machine keeps current rotating speed, and controls turning of described electromotor when the moment of torsion of described electromotor is less than described first predetermined torque Prompt drop is low, and when the rotating speed of described electromotor is down to the first preset rotation speed, receives the request of described target generated output.
15. stroke-increasing electric automobiles as claimed in claim 9, it is characterised in that described distance increasing unit controller is additionally operable to:
When described distance increasing unit starts successfully, when judging that the highest level of described current failure information is less than described preset failure level Time other, determine whether whether the direction of rotation of described electromotor is forward, and judge whether the rotating speed of described electromotor is more than Second preset rotation speed, and judging that the rotating speed that direction of rotation is forward and described electromotor of described electromotor is more than described second During preset rotation speed, further determine whether to receive emergency shutdown request, and judging that not receiving described emergency shutdown asks Time, further determine whether to receive shutdown request, and judge that the target generated output of described stroke-increasing electric automobile is the biggest In the first predetermined power, and described to shut down request and described target generated output first pre-more than described judging not receive If during power, control described stroke-increasing electric automobile and enter described generating operation mode.
16. stroke-increasing electric automobiles as claimed in claim 15, it is characterised in that described distance increasing unit controller is additionally operable to:
When receiving described shutdown request or described target generated output less than or equal to described first predetermined power, control institute The moment of torsion stating electromotor progressively unloads according to the 3rd predetermined torque step-length, and in moment of torsion default torsion less than second of described electromotor During square, described electromotor being controlled such that, described electromotor enters holding state, and treats described in being at described electromotor During machine state, control described electromotor and enter the idling mode rotating speed with the described electromotor of reduction, and turning at described electromotor Unload the moment of torsion of described electromotor when speed is less than three preset rotation speed, and control described engine misses.
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