CN106564406B - Dual-energy source power assembly system and its control method for electric vehicle - Google Patents
Dual-energy source power assembly system and its control method for electric vehicle Download PDFInfo
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- CN106564406B CN106564406B CN201610945775.5A CN201610945775A CN106564406B CN 106564406 B CN106564406 B CN 106564406B CN 201610945775 A CN201610945775 A CN 201610945775A CN 106564406 B CN106564406 B CN 106564406B
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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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
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
-
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of Dual-energy source power assembly system and its control method for electric vehicle, the system comprises: motor；The electric machine controller being connected with the motor；The electric machine controller first energy source is connected to by DC bus；And the entire car controller being connected with the electric machine controller；Furthermore, further includes: the second energy source；And the bidirectional energy switching controller being connect with the entire car controller.According to the Dual-energy source power assembly system and its control method for electric vehicle of the embodiment of the present invention, it preferably controls and optimizes the intelligence that Dual-energy source under high load inputs and shunt, effectively extend main energy source life cycle by the control strategy of peak load shifting, captures regenerating braking energy to the maximum extent；Furthermore, it is possible in a short time, such as ten seconds or so, promote hundred kilometers of accelerating abilities and driving pleasure.
Description
Technical field
The present invention relates to a kind of electric vehicles, more particularly to a kind of dual intensity driving source for electric vehicle
Assembly system and its control method.
Background technique
In recent years, the electric vehicle based on electric car, under the concerted effort of business and government just gradually by
Market recognition and acceptance shows that it is much higher than the total market size growth rate of orthodox car.At the same time, along with technological progress
The next-generation power battery that higher energy density can be brought, can further enhance the relative competitive of electric car.However, in addition to
Battery is compared with gasoline except energy density is low, the charging time is long, and traditional electric car including introducing fly wheel system is still deposited
In following two main problem:
All volume production electric cars are generally only furnished with single secondary cell currently on the market, and due to fly wheel system revolving speed or
Energy storage is limited and load variation it is difficult to predict, not can avoid such as high speed is high carry (climbing or high speed) when shape battery pair mistake
It puts or overshoots (brake energy recycling), such high charge and discharge of high frequency time often will cause: 1) to the mistake of battery management system
Degree protection, in some instances it may even be possible to cause the consequence of electric car unexpected power breakdown during middle high SOC state downward driving；2) another
A the fact that people is more allowed to worry and verified by academia and industry is, the high charge and discharge of high frequency time can be to secondary cell (including lithium
Battery such as positive electrode is the lithium battery of LiFePO4 or ternary lithium electricity) the pernicious consequence that causes accelerated ageing, energy storage to decline,
And then lead to recycling or scrap too early for secondary cell, indirect hit consumer's purchase confidence.
In addition, compared with the orthodox car based on multiple-speed gearbox, the electronic riding vehicle of all volume productions currently on the market
It is furnished with similar gear there are no a.In other words, between motor and driving wheel, the retarder of only single speed ratio
As transmission mechanism.The problem of bringing in this way is: although motor itself can accomplish stepless speed regulation, can not substitute driver and exist
Using driving for " same accelerator pedal position driving torque multiplication or demultiplication " can be obtained when traditional stepped transmission case by shift
Experience is sailed, this function may be extremely useful when overtaking other vehicles or climbing.
Therefore, it is necessary to a kind of new Dual-energy source power assembly system and its control method for electric vehicle,
Cooperation under optimal control high load between Dual-energy source provides consumption while effectively extending main energy source life cycle
Person's tradition multi gear position fuel-engined vehicle equally even preferably driving experience.
Summary of the invention
The purpose of the invention is to overcome defect of the existing technology, provide a kind of for the double of electric vehicle
Energy source and power assembly system and its control method.In order to realize the purpose, the technical solution used in the present invention is as follows:
According to the embodiment of the present invention in a first aspect, providing a kind of Dual-energy source power assembly system for electric vehicle
System, comprising: motor；The electric machine controller being connected with the motor；The electric machine controller is connected to by DC bus
One energy source；And the entire car controller being connected with the electric machine controller；Furthermore, further includes: the second energy source；And it is double
To energy switching controller, it is connect with the entire car controller；Wherein second energy source is converted by the bidirectional energy
Controller is connected to the DC bus；Wherein the entire car controller is by being periodically detected system component status feedback signal
And DC bus load current or bearing power, to calculate the second energy source output current reference or output power reference；Institute
State difference or the second energy source that bidirectional energy switching controller exports current reference and actual output current according to the second energy source
Output power refers to and the difference of real output, exports and is adjusted to it.
According to one embodiment, it is preferred that the bidirectional energy switching controller further comprises: error-detecting
Device using the second energy source output current reference or output power reference from the entire car controller and is periodically detected
The second energy source actual output current or real output, the two is subtracted each other, error signal is obtained；Shunt controller, benefit
Change duty cycle signals collection with the error signal from the error detector, to control the output of bidirectional energy converting unit
Measure the-the second energy source actual output current or real output；And bidirectional energy converting unit, in second energy
Bidirectional energy conversion is carried out between amount source and the DC bus.
According in further embodiment, it is preferred that the shunt controller calculates duty cycle signals collection according to the following formula:；Wherein, D1cFor current duty cycle width/it is big
It is small；D1pFor width/size of previous sampling time sequence duty ratio；EcFor current error, i.e. the second energy source exports current reference
Or second energy source output power with reference to difference with its actual output current or output power；EpFor the mistake of previous sampling instant
Difference and Ki、KdAnd KpIt is integral gain, the difference of the closed-loop control system that shunt controller and error detector are constituted respectively
Gain and proportional gain.
According in another embodiment, it is preferred that the Dual-energy source power assembly system for electric vehicle
System further include: the first electric current or/and voltage sensor, for detecting DC bus load current or bearing power；And second
Electric current or/and voltage sensor, for detecting the second energy source actual output current or real output；The wherein vehicle
Controller is by, multiplied by the factor is shunted, being calculated the second energy source output electric current for DC bus load current or bearing power
With reference to or output power reference.
According in another embodiment, it is preferred that the first energy source includes bidirectional energy source or unidirectional energy source,
Second energy source is bidirectional energy source.
According in yet another embodiment, it is preferred that the Dual-energy source power assembly for electric vehicle
System further includes boosting button, is connect with the entire car controller, for opening boost mode；Wherein the entire car controller is matched
It is set to the open state and accelerator pedal aperture according to boosting button, calculate current motor torque reference signal and is inputted
To electric machine controller.
According in still further embodiment, optionally, the boosting button includes plectrum form, presses key-shaped in form
Formula or switch form；The boosting button can be set and integrate on the steering wheel, on console or suitable for driver's operation
Other positions.
According to the second aspect of the embodiment of the present invention, a kind of Dual-energy source power assembly system for electric vehicle is provided
System control method, comprising: read step, for reading accelerator pedal aperture；First judgment step is helped for judging whether to meet
Push-model entry condition；Second judgment step, for when meeting boost mode entry condition, judging whether boosting button is pressed
Under；And boost mode setting procedure, for when boosting button is pressed, according to the tractive torque reference-speed for having boosting
Envelope sets the reference of current motor tractive torque.
According in further embodiment, optionally, the Dual-energy source power assembly system for electric vehicle
Control method of uniting further includes general mode setting procedure, for when determining that boosting button is not pressed, according to normal traction
Torque reference-speed envelope setting current motor tractive torque reference.
According in another embodiment, optionally, the Dual-energy source power assembly system for electric vehicle
System control method further includes closing step, for closing boosting button when determination is unsatisfactory for boost mode entry condition.
According in another embodiment, it is preferred that first judgment step further comprises: judging the second energy source
Whether state feedback is normal；Judge whether motor and electric machine controller state feedback are normal；And judge bidirectional energy conversion control
Whether device state feedback processed is normal.
According to the Dual-energy source power assembly system and its control method for electric vehicle of the embodiment of the present invention, energy
It preferably controls and optimizes the intelligence that Dual-energy source under high load inputs and shunt, main energy is extended by the control strategy of peak load shifting
Source life cycle, captures regenerating braking energy to the maximum extent.Furthermore, it is possible to obtain extremely useful same when overtaking other vehicles or climbing
The driving experience of one accelerator pedal position driving torque multiplication.
The present invention is specifically described below in conjunction with attached drawing and by embodiment, wherein identical or essentially identical portion
Part is indicated using identical appended drawing reference.
Detailed description of the invention
Fig. 1 is the signal according to the Dual-energy source power assembly system for electric vehicle of one embodiment of the invention
Property structural block diagram；
Fig. 2 is shown according to the Dual-energy source power assembly system for electric vehicle of of the invention another embodiment
Meaning property structural block diagram；
Fig. 3 is the signal according to the Dual-energy source power assembly system for electric vehicle of an example of the invention
Figure；
Fig. 4 is tractive torque reference-speed curves figure of traditional electric vehicle；
Fig. 5 is the traction according to the electric vehicle based on Dual-energy source power assembly system of one embodiment of the invention
Torque reference-speed curves figure；
Fig. 6 is to be designed to according to the boosting button of one embodiment of the invention along the symmetrical cloth of the vertical center line of steering wheel
It sets and at the schematic diagram of the integrated rod-shaped plectrum of a pair on the steering wheel；
Fig. 7 is to be designed to according to the boosting button of one embodiment of the invention along the symmetrical cloth of the vertical center line of steering wheel
It sets and at the schematic diagram of integrated a pair of of sheet plectrum on the steering wheel；
Fig. 8 is to be designed to according to the boosting button of one embodiment of the invention along the symmetrical cloth of the vertical center line of steering wheel
It sets and at the schematic diagram of integrated a pair of buttons on the steering wheel；
Fig. 9 is individually pressed according to one that the boosting button of one embodiment of the invention is designed to be integrated on console
Button；
Figure 10 is controlled according to the Dual-energy source power assembly system for electric vehicle of one embodiment of the invention
The schematic flow chart of method；And
Figure 11 is controlled according to the Dual-energy source power assembly system for electric vehicle of one embodiment of the invention
The specific flow chart of the first judgment step in method.
Specific embodiment
As shown in Figure 1, being the Dual-energy source power assembly system for electric vehicle according to one embodiment of the invention
The schematic block diagram of system specifically includes that motor 100；The electric machine controller 102 being connected with the motor；Pass through direct current
Bus is connected to the electric machine controller first energy source 104；And the entire car controller being connected with the electric machine controller
106；Furthermore, further includes: the second energy source 108, and the bidirectional energy switching controller being connect with the entire car controller
110；Wherein second energy source 108 is connected to the DC bus by the bidirectional energy switching controller；Wherein institute
Entire car controller 106 is stated by being periodically detected system component status feedback signal and DC bus load current or load function
Rate, to calculate the second energy source output current reference or output power reference；The bidirectional energy switching controller is according to second
Energy source export current reference and actual output current difference or the second energy source output power with reference to real output it
Difference exports it and is adjusted.
In another embodiment, as shown in Fig. 2, the Dual-energy source power assembly system for electric vehicle
Further include boosting button 112, is connect with the entire car controller 106, for opening boost mode；The wherein entire car controller
106 are configured to open state and accelerator pedal aperture according to boosting button, calculate current motor tractive torque reference signal
And it is input in electric machine controller.
As shown in figure 3, being the Dual-energy source power assembly system for electric vehicle according to an example of the invention
Schematic diagram, wherein electric machine controller 102 generally includes two-way DC/AC inverter 102-1 and inverter control unit 102-2,
Two-way DC/AC inverter 102-1 is connected to progress DC/AC transformation between first energy source 104 and motor 100；And inverter control
Unit 102-2 processed is connected between entire car controller (VCU) 106 and two-way DC/AC inverter 102-1, in entire car controller
(VCU) under 106 control, T is referred to according to current motor torqueref(seeing below) and simultaneously received electric machine phase current
ibAnd ic, rotor 114 position F(not necessarily), PWM duty cycle signal collection D2 is to two-way DC/AC inverter for output, from
And realize the control to motor output torque.
Wherein bidirectional energy switching controller 110 further comprises: error detector 110-1, shunt controller 110-2,
And bidirectional energy converting unit 110-3.Bidirectional energy converting unit 110-3 is connected to the second energy source 108 and the direct current
Between bus, two-way DC/DC transformation is carried out；Error detector 110-1 is in entire car controller (VCU) 106 and shunt controller
Between 110-2；And shunt controller 110-2 is connect with bidirectional energy converting unit 110-3, to control it.
Wherein entire car controller 106 is by the IC chips such as single-chip microcontroller, DSP, a FPGA or micro computer PC structure
At following signals is detected or received by the logic scheduling real-time periodic of its internal pre-programmed: by detection accelerator pedal 116
To accelerator pedal aperture (i.e. accelerator open degree) θ signal；Brake aperture γ signal is obtained by detecting brake pedal 118；Pass through inspection
It surveys boosting button (i.e. BOOST button) 112 and obtains its open state；By detecting the current sensor being arranged on DC bus
Or/and voltage sensor 120 obtains DC bus load current ILOADOr power PLOAD；And first energy source state feedback letter
Number；Second energy source status feedback signal；Bidirectional energy converts (i.e. electrical power conversion) location mode feedback signal；With motor and electricity
Machine controller status feedback signal etc..Calculate two variables of output by entire car controller 106: the second energy source exports electric current
With reference to IscrefOr second energy source output power refer to PscrefAnd current motor tractive torque refers to Tref。
Wherein the second energy source exports current reference signal IscrefOr the second energy source output power reference signal Pscref
It is main that DC bus load current is first obtained by detection current sensor or/and voltage sensor 120 by entire car controller 106
ILOADOr power PLOAD, then (1) calculates gained according to the following equation:
(1)
Wherein, a is to shunt the factor (no unit), and the practical value of a can be according to the shape of the input signal of entire car controller 106
State (and its historical data) and its variation and determines, and one of the effect of entire car controller 106 be exactly generate a, and make its value float
It moves between -1~1 range, loads for mitigating the driving of motor 100 when high speed height carries to main energy source namely first energy source
The high stress that 104 over-discharges or overshoot generate, and the second energy source 108 is effectively fed if necessary.For brevity,
The generting machanism of a does not repeat again herein, can refer to pertinent literature introduction, such as Chinese patent CN103312020B and Wang Qi,
" the HEV composite power source based on Modified Filter power dividing control " of Sun Yukun, Huang Yonghong, application of electronic technology,
2014/03。
It, can be by the way that the current sense of bidirectional energy converting unit 110-3 output end be arranged in addition, in one embodiment
Device or/and voltage sensor 122 are periodically detected the second energy source actual output current or real output, that is, double
To the actual output current Isc or output power Psc of energy switching controller 110.
In order to ensure the accuracy of the actual output current Isc or output power Psc of bidirectional energy switching controller 110,
It can be realized using the closed-loop control system that shunt controller 110-2 therein and error detector 110-1 is constituted.Wherein divide
Stream controller 110-2 is by an analog circuit based on operational amplifier, or by the digital integrated electricity such as single-chip microcontroller, DSP, FPGA
Road chip, or be made of micro computer PC, and error detector 110-1 can be a summation comparison amplifier.Error detector
110-1 passes through the communication bus such as the logic of its internal pre-programmed or Modbus, ProfiBus, LIN, CAN or FlexRay
Following signals is detected or received to scheduling real-time periodic: calculating resulting second energy source according to formula (1) by entire car controller 106
Export current reference IscrefOr second energy source output power refer to Pscref；By current sensor and/or voltage sensor 122
Obtained the second energy source actual output current Isc or its real output Psc.
Error detector 110-1 is then according to the difference output error signal of above-mentioned two groups of signals, and the error signal is immediately
It is input to shunt controller 110-2, is used to make primary sampling every 1~100 millisecond of rate and update as input signal
To decide whether in its output of current sequence change, i.e. PWM duty cycle signal collection D1.If error signal is not zero,
That is D1 needs to update, and shunt controller 110-2 then calculates new D1 and is output to bidirectional energy converting unit 110-3, and D1
Size directly determines width/size of each switching PWM pulse modulation duty cycle in bidirectional energy converting unit 110-3.D1's
Specific formation mechanism can refer to following formula (2) realization:
(2)
Wherein, D1cFor width/size of current duty cycle；D1pFor width/size of previous sampling time sequence duty ratio；Ec
Current reference Isc is exported for current error namely the second energy sourcerefOr second energy source output power refer to PscrefWith it
The difference of actual output current or output power；EpFor the error of previous sampling instant；And Ki、KdAnd KpIt is closed loop control respectively
Integral gain, differential gain and the proportional gain of system processed.
For example, if error current EcIt is negative namely the second energy source actual output current Isc or output power
Psc is greater than the second energy source and exports current reference IscrefOr output power refers to Pscref, then the closed-loop control system can be gradually
Reduce the size of D1, namely D1c<D1p, so that error be made to be intended to zero rapidly, vice versa.
In addition, another effect of entire car controller 106 is through real-time monitoring boosting button (BOOST button) 112
Open state and accelerator pedal 116 namely accelerator open degree θ, by look-up table, (step of specifically tabling look-up be can refer to below with reference to figure
Described in 4 and Fig. 5) calculate current motor tractive torque reference signal TrefAnd it is input to the inverter in electric machine controller
Control unit 102-2, to realize the driving experience for realizing " boosting " on demand during the motion.It is described in detail below.
As shown in figure 4, for tractive torque reference-speed curves figure of traditional electric vehicle, in single gas pedal control
In the electric vehicle drive system of system, can by look-up table (i.e. tractive torque refer to accelerator pedal accelerator open degree θ,
And the corresponding relationship of speed), real-time tractive torque is calculated with reference to Tref.And Fig. 5 is proposed according to the embodiment of the present invention
Based in Dual-energy source power assembly system, i.e. the electric vehicle drive system of throttle+boosting (BOOST) button Collaborative Control
In, it can be calculated by look-up table (namely tractive torque is with reference to corresponding relationship with accelerator pedal accelerator open degree θ and speed)
Real-time tractive torque refers to T outrefSchematic diagram, wherein real-time tractive torque refer to TrefIt is divided into two kinds of situations: general mode again
Real-time tractive torque refers to T under (i.e. boosting (BOOST) button unactivated state)ref NAnd boosting (BOOST) mode (helps
Push away (BOOST) button state of activation) under in real time tractive torque with reference to Tref M.Specifically, being contrasted with Fig. 4, Fig. 5 solid line
It is illustrated respectively under different 116 accelerator open degree θ of accelerator pedal with dotted line, (i.e. shown in Fig. 4) " tractive torque ginseng under general mode
Examine-speed " " tractive torque reference-speed " envelope (D, E, F) under envelope (A, B, C), and boosting (BOOST) mode
Between difference.Moreover, Fig. 5 respectively illustrates the feelings constant in current accelerator pedal accelerator open degree with three pairs of arrows
Under condition, when boosting (BOOST) button 112 is opened, how the Dual-energy source power assembly system is respectively from general mode operating point
(G, H, I) enters boosting (BOOST) mode operating point (G ', H ', I ')；And it is constant in current accelerator pedal accelerator open degree
In the case of, when boosting (BOOST) button 112 is closed or is cancelled, how the Dual-energy source power assembly system is respectively from boosting
(BOOST) mode operating point (G ', H ', I ') returns to general mode operating point (G, H, I).The purpose for the arrangement is that in order to not
In electric vehicle using traditional stepped transmission case, reaching driver using Dual-energy source power source is having grade change using tradition
The driving experience of " same accelerator pedal position driving torque multiplication or demultiplication " can be obtained when fast case by shift.It may be noted that
, for clearer note, Fig. 4 and Fig. 5 are merely displayed in general mode under three kinds of accelerator open degrees (i.e. 33%, 66%, 100%)
Or/and the comparison of boosting (BOOST) mode " tractive torque reference-speed " envelope, practical θ can nothings between from 0% to 100%
Grade adjustment, corresponding general mode or boosting (BOOST) mode " tractive torque reference-speed " envelope are tri- kinds of Fig. 5
Linear (or non-linear) interpolation of accelerator open degree.
It should also be noted that the component part in Fig. 4 and Fig. 5 in " tractive torque reference-speed " envelope, i.e.,
(under different accelerator open degrees) straightway and curved section, can be by consulting specification/operations of existing various motors in the market
Handbook is obtained by experimental calibration.The features such as the position of the shape of specific envelope, straightway and curved section intersection point are according to electricity
Machine type and motor body design difference and it is different, motor applicatory includes: direct current generator, alternating current asynchronous induction machine,
Permanent magnet synchronous motor, switched reluctance machines, synchronous magnetic resistance motor etc..
As shown in figure 5, the tractive torque on general mode operating point G, H, I refers to Tref NWith in corresponding boosting
(BOOST) mode operating point G ', H ', tractive torque refers to T on I 'ref MBetween meet formula (3):
(3)
Wherein β is torque increase multiple (no unit), and the practical value of β can be according to the shape of each input signal of entire car controller 106
State, the calibration value of " accelerator open degree θ-tractive torque reference-speed " curve is determined in the Selection and Design and Fig. 5 of motor 100
It is fixed.It is to provide the brand-new manipulation concept of one kind using the purpose of torque increase multiple in formula and defines its change in the specific implementation
Change range.The generting machanism of β is in patent document U.S. Patent No.6,098,733 and " Tesla Model S P85D
“Insane” Spells End of Drag Racing As We Know It-Video(http://insideevs.com/
Tesla-model-s-p85d-insane-spells-end-drag-racing-know-vi deo/) " in describe embodiment party
Formula, concrete implementation details without repeating herein.
Above-mentioned boosting (BOOST) button 112, which can be set, is being suitable for any position of electric vehicle driver operation,
It can also take various forms.Specifically, as shown in Figures 6 and 7, boosting (BOOST) button 112 is designed to along steering wheel
Symmetrical a pair of rod-shaped (shown in Fig. 6) or sheet (shown in Fig. 7) plectrum 112 of 124 vertical center line 126, and it is integrated in direction
On disk 124 (in practical applications, plectrum can be provided only on unilateral (left or right side)).Although Fig. 6 and 7 respectively illustrates two kinds
The substantially shape of plectrum, but these configuration designs are not limited in practical application.In addition, steering wheel is also shown in Fig. 6 and 7
124 with the relative position (similarly hereinafter) of console 128 and display screen 130.
As shown in figure 8, boosting (BOOST) button 112 is designed to symmetrical along the vertical center line 126 of steering wheel 124
A pair of buttons, and be integrated on steering wheel 124 (in practical applications, button can be provided only on unilateral (left or right side), such as
What is used in Fig. 3 is exactly the single button scheme on unilateral (right side)).It is although Fig. 8 shows the substantially shape of button, i.e., round,
This configuration design is not limited in practical application.
As shown in figure 9, boosting (BOOST) button 112, that is, boosting (BOOST) mode selection switch are designed to one
A independent button 112, and be integrated in inside console 128.Although Fig. 9 shows the substantially shape of the button, practical application
In may be not limited to this configuration design.
In the above-described embodiments, first energy source can be bidirectional energy source, such as lithium battery (including just extremely ferric phosphate
Lithium LFP, cobalt acid lithium LCO, LiMn2O4 LMO, nickel ion doped LNMO or cobalt nickel lithium manganate ternary material NCM or nickel cobalt lithium aluminate
Ternary material NCA；Cathode is graphite, traditional lithium battery of carbon or silicon composition.And just extremely sulphur or sulfur compound, cathode are lithium
Or the lithium-sulfur cell of lithium compound composition)/nickel-metal hydride battery/nickel-cadmium cell/lead-acid battery.First energy source is also possible to unidirectional energy
Amount source, such as fuel cell/internal combustion engine or gas turbine powered generator/solar energy power generating power supply (polysilicon/thin
Film) etc..Second energy source is bidirectional energy source, such as (including positive and negative anodes all use same material (such as carbon) to supercapacitor
The symmetry supercapacitor and positive and negative anodes of composition do not have to the asymmetry supercapacitor of same material composition (usually
It is called battery capacitor or fake capacitance, wherein the compound constituted, another pole carbon are admixed by lithium compound or lithium and carbon in a certain pole
Composition)/lithium battery (including just extremely LiFePO4 LFP, cobalt acid lithium LCO, LiMn2O4 LMO, nickel ion doped LNMO or nickel cobalt
LiMn2O4 ternary material NCM or nickel cobalt lithium aluminate ternary material NCA；Cathode is graphite, traditional lithium battery of carbon or silicon composition.With
And just extremely sulphur or sulfur compound, cathode are the lithium-sulfur cell that lithium or lithium compound form.And just extremely LiFePO4 LFP,
Cobalt acid lithium LCO, LiMn2O4 LMO, nickel ion doped LNMO or cobalt nickel lithium manganate ternary material NCM or nickel cobalt lithium aluminate ternary material
Expect NCA；Cathode is the lithium titanate battery of lithium titanate LTO composition) etc..
According to the Dual-energy source power assembly system control method master for electric vehicle of one embodiment of the invention
It include: read step, the first judgment step, the second judgment step and boost mode setting procedure；In other embodiments
In, it may also include general mode setting procedure, and close step.It as shown in Figure 10, is according to one embodiment of the invention
The flow chart of Dual-energy source power assembly system control method for electric vehicle, after the beginning of frame 1000, into frame
1002 read accelerator pedal accelerator opening amount signal θ (i.e. read step)；Then, into frame 1004, judge whether to meet boosting
(BOOST) mode entry condition (i.e. the first judgment step)；If meeting entry condition, judge that boosting button is in frame 1006
It is no to be pressed and (activate) (i.e. the second judgment step)；When determining that boosting button is pressed, then enter frame 1008, according to helping
Tractive torque reference-speed envelope (i.e. envelope D, E, F in Fig. 5) the setting current motor tractive torque pushed away is with reference to Tref
(i.e. boost mode setting procedure), subsequently entering frame 1014 terminates process；If it is determined that boosting button is not pressed, then enter
Frame 1010, according to normal traction torque reference-speed envelope (i.e. envelope A, B, C in Fig. 5) setting current motor traction
Torque refers to Tref(i.e. general mode setting procedure), subsequently entering frame 1014 terminates process；If be unsatisfactory in the determination of frame 1004
Entry condition then enters frame 1012, closes boosting (BOOST) button (i.e. closing step), subsequently entering frame 1014 terminates stream
Journey.
As shown in figure 11, it is the Dual-energy source power assembly system for electric vehicle according to one embodiment of the invention
The specific flow chart of first judgment step in control method of uniting into frame 1100, judges the wherein after the first judgment step starts
Whether two energy source states feedback normal, specifically, such as without excess temperature, over-voltage, SOC be too low or short-circuit open-circuit fault etc. then
Closing step is executed if abnormal for normal condition；If normal, enter frame 1102, judge motor and motor control
Whether device state feedback is normal, specifically, such as without excess temperature, rotor sensor (if any) failure, controller open circuit or short circuit
Failure etc. then executes closing step if abnormal for normal condition；If normal, enter frame 1104, judge two-way energy
Whether normal measure switching controller state feedback, specifically, such as without excess temperature, overcurrent, controller open circuit or short trouble etc.
Then closing step is executed if abnormal for normal condition；If normal, the second judgment step is carried out.
Above by specific embodiment, the present invention is described, but the present invention is not limited to these specific implementations
Example.It will be understood by those skilled in the art that various modifications, equivalent replacement, variation etc. can also be done to the present invention, such as will be upper
It states in embodiment step or device is divided into two or more steps or device to realize, or on the contrary, by above-mentioned reality
The function of applying two or more steps or device in example, which is placed in a step or device, to be realized.But these are converted
It, all should be within protection scope of the present invention without departing from spirit of the invention.In addition, present specification and claims
Some terms used in book, such as " first ", " second " etc. are not limitation, it is only for convenient for description.In addition,
" one embodiment " described in the above many places, " another embodiment " etc. indicate different embodiments, naturally it is also possible to by it
It is all or part of to combine in one embodiment.
Claims (10)
1. a kind of Dual-energy source power assembly system for electric vehicle, comprising: motor；The electricity being connected with the motor
Machine controller；The electric machine controller first energy source is connected to by DC bus；And it is connected with the electric machine controller
The entire car controller connect；It is characterized by further comprising:
Second energy source；And
Bidirectional energy switching controller is connect with the entire car controller；
Wherein second energy source is connected to the DC bus by the bidirectional energy switching controller；It is wherein described whole
Vehicle controller is by being periodically detected system component status feedback signal and DC bus load current or bearing power, to count
Calculate the second energy source output current reference or output power reference；The bidirectional energy switching controller is defeated according to the second energy source
Out the difference or the second energy source output power of current reference and actual output current refer to and real output difference, it is defeated to its
It is adjusted out.
2. being used for the Dual-energy source power assembly system of electric vehicle as described in claim 1, which is characterized in that described double
Further comprise to energy switching controller:
Error detector, using from the entire car controller the second energy source output current reference or output power refer to
And the second energy source actual output current or real output being periodically detected, obtain error signal；
Shunt controller changes duty cycle signals collection using the error signal from the error detector, to control two-way energy
Measure converting unit output quantity；And
Bidirectional energy converting unit, for carrying out bidirectional energy conversion between second energy source and the DC bus.
3. being used for the Dual-energy source power assembly system of electric vehicle as claimed in claim 2, which is characterized in that described point
Stream controller calculates duty cycle signals collection according to the following formula:
；
Wherein, D1cFor width/size of current duty cycle；D1pFor width/size of previous sampling time sequence duty ratio；EcTo work as
Preceding error, i.e. the second energy source export current reference or the second energy source output power and refer to and its actual output current or defeated
The difference of power out；EpFor the error and K of previous sampling instanti、KdAnd KpIt is shunt controller and error detector respectively
Integral gain, differential gain and the proportional gain of the closed-loop control system of composition.
4. being used for the Dual-energy source power assembly system of electric vehicle as described in claim 1, which is characterized in that also wrap
It includes:
First electric current or/and voltage sensor, for detecting DC bus load current or bearing power；And
Second electric current or/and voltage sensor, for detecting the second energy source actual output current or real output；
Wherein the entire car controller passes through the DC bus load current that will test or bearing power multiplied by the factor is shunted, and counts
Calculation obtains the second energy source output current reference or output power reference.
5. being used for the Dual-energy source power assembly system of electric vehicle as described in claim 1, it is characterised in that: described the
One energy source includes bidirectional energy source or unidirectional energy source；Second energy source is bidirectional energy source.
6. being used for the Dual-energy source power assembly system of electric vehicle as described in claim 1, which is characterized in that also wrap
It includes:
Boosting button is connect, for opening boost mode with the entire car controller；
Wherein the entire car controller is configured to open state and accelerator pedal aperture according to boosting button, calculates current electricity
Machine torque reference signal is simultaneously input to electric machine controller.
7. being used for the Dual-energy source power assembly system of electric vehicle as claimed in claim 6, it is characterised in that: described to help
Button push includes plectrum form, key form or switch form；The boosting button can be set and integrate on the steering wheel, in
Control other positions on platform or suitable for driver's operation.
8. a kind of Dual-energy source power assembly system control method for electric vehicle characterized by comprising
Read step, for reading accelerator pedal aperture；
First judgment step meets boost mode entry condition for judging whether；
Second judgment step, for judging whether boosting button is pressed when meeting boost mode entry condition；And
Boost mode setting procedure, for when boosting button is pressed, according to the tractive torque reference-speed envelope for having boosting
Line sets the reference of current motor tractive torque；Or
General mode setting procedure, for when determining that boosting button is not pressed, according to normal traction torque reference-speed
Envelope sets the reference of current motor tractive torque.
9. being used for the Dual-energy source power assembly system control method of electric vehicle as claimed in claim 8, feature exists
In, further includes:
Step is closed, for closing boosting button when determination is unsatisfactory for boost mode entry condition.
10. being used for the Dual-energy source power assembly system control method of electric vehicle as claimed in claim 8, feature exists
In first judgment step further comprises:
Judge whether the second energy source state feedback is normal；
Judge whether motor and electric machine controller state feedback are normal；And
Judge whether bidirectional energy switching controller state feedback is normal.
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| FR3151268A1 (en) * | 2023-07-20 | 2025-01-24 | Psa Automobiles Sa | CONTROLLED DELIVERY OF INCREASED ENGINE TORQUE IN A VEHICLE |
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| CN107947679B (en) * | 2017-11-15 | 2019-11-29 | 浙江大学 | A kind of multiport two-way switch reluctance motor driving system for solar hybrid power automobile |
| CN108773297A (en) * | 2018-06-08 | 2018-11-09 | 北京长城华冠汽车科技股份有限公司 | Control method, storage medium and the electric vehicle of violent acceleration pattern |
| CN111273595B (en) * | 2020-05-08 | 2020-08-18 | 盛瑞传动股份有限公司 | Hybrid transmission control method and device, electronic device, and storage medium |
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