CN107696868A - Processing method, device and the mobile unit of electric automobile hypervelocity failure - Google Patents
Processing method, device and the mobile unit of electric automobile hypervelocity failure Download PDFInfo
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- CN107696868A CN107696868A CN201710912009.3A CN201710912009A CN107696868A CN 107696868 A CN107696868 A CN 107696868A CN 201710912009 A CN201710912009 A CN 201710912009A CN 107696868 A CN107696868 A CN 107696868A
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
-
- 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
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- 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
- B60L2250/00—Driver interactions
- B60L2250/10—Driver interactions by alarm
-
- 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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- Engineering & Computer Science (AREA)
- 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 present invention proposes a kind of processing method, device and the mobile unit of electric automobile hypervelocity failure, wherein, the processing method of electric automobile hypervelocity failure includes：Obtain the rotating speed of the motor of electric automobile；According to the rotating speed of the motor, corresponding handle is carried out to the electric automobile.In the embodiment of the present invention, according to the different rotating speeds of the motor of electric automobile, different processing is carried out to electric automobile, the safely, effectively processing to electric automobile hypervelocity is realized, ensure that vehicle safety.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of processing method of electric automobile hypervelocity failure, device and
Mobile unit.
Background technology
In face of increasingly severe energy and environment problem, energy-conservation is just turning into the heat of current various countries research with new-energy automobile
Point.In China, energy-conservation has obtained the great attention of government and industrial quarters with new-energy automobile, and is set to emerging strategic production
One of industry.As energy-conservation and one kind of new-energy automobile, pure electric automobile has emission-free discharge, energy dose-effect in the process of moving
The multiple advantages such as rate height, low, the recoverable energy of noise, therefore pure electric automobile is greatly developed to Chinese energy safety, ring
Border protection is significant.
Pure electric automobile realizes that vehicle travels by power wheel, core component pair of the motor as pure electric automobile
Vehicle performance influence is great, wherein permagnetic synchronous motor (permanent magnet synchronous motor, abbreviation
PMSM) due to having the advantages that high efficiency, height output torque, high power density and good dynamic property, at present as pure
The main flow of drive system of electric automobile.Safe and reliable is the basic demand of pure electric automobile normal operation, for the drive in vehicle
Dynamic motor, its function is correct, effectively, to securely achieve be the premise for ensureing vehicle safety work.
For pure electric automobile, speed will then increase risk to lose control of one's vehicle beyond normal range (NR), for equipping permanent magnetism
The pure electric automobile of synchronous motor, when motor speed seriously exceeds normal range (NR), the control failure of depth weak magnetic is may result in, is entered
And the unexpected output of moment of torsion is caused, it can equally cause lubrication problem when Motor Over Speed is serious in addition, in turn result in driving electricity
Machine burning such as ruins at the irreversible substantive damage.For pure electric automobile, in view of serious consequence caused by Motor Over Speed institute is possible,
Safe and effective processing method must be provided for hypervelocity.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.
Therefore, first purpose of the present invention is to propose a kind of processing method of electric automobile hypervelocity failure, with for
Electric automobile exceeds the speed limit, and carries out safe and effective processing, ensures vehicle safety.
Second object of the present invention is to propose a kind of processing unit of electric automobile hypervelocity failure.
Third object of the present invention is to propose a kind of mobile unit.
Fourth object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
The 5th purpose of the present invention is to propose a kind of computer program product.
For the above-mentioned purpose, first aspect present invention embodiment proposes a kind of processing side of electric automobile hypervelocity failure
Method, including：
Obtain the rotating speed of the motor of electric automobile；
According to the rotating speed of the motor, corresponding handle is carried out to the electric automobile.
The processing method of the electric automobile hypervelocity failure of the embodiment of the present invention, according to the difference of the motor of electric automobile
Rotating speed, different processing is carried out to electric automobile, realize the safely, effectively processing to electric automobile hypervelocity, ensure that vehicle
Safety.
For the above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of processing dress of electric automobile hypervelocity failure
Put, including：
Acquisition module, the rotating speed of the motor for obtaining electric automobile；
Processing module, for the rotating speed according to the motor, corresponding handle is carried out to the electric automobile.
The processing unit of the electric automobile hypervelocity failure of the embodiment of the present invention, according to the difference of the motor of electric automobile
Rotating speed, different processing is carried out to electric automobile, realize the safely, effectively processing to electric automobile hypervelocity, ensure that vehicle
Safety.
For the above-mentioned purpose, third aspect present invention embodiment proposes a kind of mobile unit, including：Memory, processing
Device and it is stored in the computer program that can be run on the memory and on the processor, journey described in the computing device
Sequence, for realizing the processing method of the electric automobile hypervelocity failure as described in first aspect present invention embodiment.
For the above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter, computer program is stored thereon with, is realized when the program is executed by processor as described in first aspect present invention embodiment
The processing method of electric automobile hypervelocity failure.
For the above-mentioned purpose, fifth aspect present invention embodiment proposes a kind of computer program product, when the calculating
When instruction in machine program product is by computing device, performs the electric automobile as described in first aspect present invention embodiment and exceed the speed limit
The processing method of failure.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
A kind of schematic flow sheet of the processing method for electric automobile hypervelocity failure that Fig. 1 is provided by the embodiment of the present invention；
Fig. 2 is by the exceed the speed limit processing method applicable electric automobile of failure of electric automobile that the embodiment of the present invention provides
System Organization Chart；
Fig. 3 is illustrated by the flow of the processing method for another electric automobile hypervelocity failure that the embodiment of the present invention provides
Figure；
Fig. 4 is electric automobile permagnetic synchronous motor actively short-circuit schematic diagram；
Fig. 5 motors demagnetization process schematic；
Fig. 6 is to determine whether that the operation principle for performing active short circuit operation is illustrated according to the current temperature of motor
Figure；And
A kind of structural representation of the processing unit for electric automobile hypervelocity failure that Fig. 7 is provided by the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of embodiment is shown in the drawings, wherein identical from beginning to end
Or similar label represents same or similar element or the element with same or like function.Retouched below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the electric automobile hypervelocity processing method of failure of the embodiment of the present invention, device are described and vehicle-mounted is set
It is standby.
A kind of schematic flow sheet of the processing method for electric automobile hypervelocity failure that Fig. 1 is provided by the embodiment of the present invention.
As shown in figure 1, the processing method of electric automobile hypervelocity failure comprises the following steps：
S101, obtain the rotating speed of the motor of electric automobile.
S102, according to the rotating speed of motor, corresponding handle is carried out to electric automobile.
Specifically, the rotating speed of the motor of electric automobile is obtained in real time, and according to the rotating speed of the motor got,
The hypervelocity degree of motor is determined, the degree of potential hazard is different caused by hypervelocity degree difference is possible, for difference
The extent of injury to electric automobile carry out corresponding to handle.
The processing method of the electric automobile hypervelocity failure of the embodiment of the present invention is applied to have system architecture as shown in Figure 2
Pure electric automobile.It is as shown in Fig. 2 main according to the framework, entire car controller (Vehicle Control Unit, abbreviation VCU)
The realization of guide-car various functions, wherein entire car controller and battery management system (Battery Management System,
Abbreviation BMS), the system such as electric machine controller (Microcontroller Unit, abbreviation MCU) carry out information exchange, according to advance
The control logic of formulation realizes the control to vehicle, such as vehicle power-on and power-off, fault detect and processing；Battery management system BMS
The control to electrokinetic cell is then mainly realized, ensures its normal work, such as charges, discharge, battery temperature control；Motor control
Device MCU then calculates demand torque according to entire car controller VCU orders (enabled), and the information such as gear, accelerator pedal, in this base
Controlled motor Motor normal works (moment of torsion it is expected in output) on plinth, while complete the detection and processing of drive system failure.Its
In, the motor Motor in system shown in Figure 2 framework is specifically as follows permagnetic synchronous motor, and it passes through single-stage speed reducing with wheel
Device connects, fixed speed reducing ratio.
In the present embodiment, according to the different rotating speeds of the motor of electric automobile, different processing is carried out to electric automobile,
The safely, effectively processing to electric automobile hypervelocity is realized, ensure that vehicle safety.
For an embodiment in clear explanation, the processing side of another electric automobile hypervelocity failure is present embodiments provided
Method.The schematic flow sheet of the processing method for another electric automobile hypervelocity failure that Fig. 3 is provided by the embodiment of the present invention.Such as figure
Shown in 3, the processing method of electric automobile hypervelocity failure may comprise steps of：
S301, obtain the rotating speed of the motor of electric automobile.
Specifically, this step S301 is identical with the step S101 in embodiment illustrated in fig. 1, here is omitted.
Step S102 in embodiment illustrated in fig. 1 specifically may include following steps S302.
S302, according to the rotating speed of motor, at fault alarm processing corresponding to electric automobile progress and power limitation
Reason.
Specifically, this step S302 gives a kind of feasible embodiment party of the processing carried out in step S102 to electric automobile
Formula, fault alarm processing and power limitation corresponding to electric automobile progress can specifically be handled.
Further, in a kind of possible implementation of the embodiment of the present invention, step S302 specifically may include following
Step：If the rotating speed of motor is driven in slight hypervelocity section by instrument word and the prompting of instrument over-speed warning light
The person of sailing slightly is exceeded the speed limit；Or if the rotating speed of motor is located in moderate hypervelocity section, exceeded the speed limit by instrument word, instrument
Alarm lamp and alarm sound prompting driver moderate hypervelocity, and the output torque of electric automobile is limited to 0 according to certain gradient；Or
Person, if the rotating speed of motor is located in overspeed seriously section, carried by instrument word, drive system trouble light and alarm sound
Show driver's overspeed seriously, and active short circuit operation is performed to electric automobile.
Specifically, can according to the rotating speed of the motor got, it is determined that hypervelocity degree, i.e., positioned at which exceed the speed limit section
It is interior, and according to different hypervelocity degree, take different processing methods.The embodiment of the present invention will be super according to the rotating speed of motor
Speed is divided into three sections, specific as follows：
When the rotating speed of motor is less than the rotating speed R1 of motor corresponding to the specified highest desin speed of electric automobile,
That is the rotating speed of motor in 0-R1 scopes, for normal vehicle operation when the scope area that can reach of motor rotating speed
Between, belong to normal condition.
1) slightly exceed the speed limit section
The rotating speed of motor is more than corresponding to the specified highest desin speed of electric automobile corresponding to slight hypervelocity section
The rotating speed R1 of motor, and less than or equal to the rotating speed of motor corresponding to the actual highest desin speed of electric automobile
R2, i.e. motor rotating speed are in the range of R1-R2.The section is the range of speeds section that can actually reach of vehicle, i.e., it
It is the design margin of vehicle max. speed.Electric machine controller can realize the normal control to motor in the section, as depth is weak
Magnetic control etc., but because rotating speed has been over the rotating speed of motor corresponding to the specified highest desin speed of electric automobile
R1, therefore need necessarily to be handled for security consideration, limiting motor rotating speed continues to raise.
It is smaller as the potential hazard caused by motor speed in the rotating speed section, therefore hazard rating is set to slightly.At this
Rotating speed section, hypervelocity amplitude is smaller, and electric machine controller can realize the normal control to motor, thus only by instrument word and
Slightly hypervelocity just disclosure satisfy that safe driving demand to instrument over-speed warning light prompting driver, while will not destroy driving for driver
Sail impression.Processing mode is concretely：Instrument text prompt driver " overspeed of vehicle, asks safe driving ", while lights instrument
Over-speed warning light.Power limits：Nothing.
2) moderate hypervelocity section
The rotating speed of motor is more than corresponding to the actual highest desin speed of electric automobile corresponding to moderate hypervelocity section
The rotating speed R2 of motor, and the highest of motor under the normal control of motor is turned less than or equal to electric machine controller
Fast R3, i.e. motor rotating speed are in the range of R2-R3.The section can for motor speed under the improper transport condition of vehicle
The range of speeds section reached, such as wheel-slip (ice face, driving wheel are hanging), vehicle descending.Because rotating speed exceedes motor control
For device processed to the maximum speed R3 of motor under the normal control of motor, control strategy will fail (such as depth weak magnetic controls),
Now vehicle can face risk out of control.Therefore, when motor speed enter the section need to take further restriction with
Ensure traffic safety.
In the rotating speed section, because motor speed is higher, have been able to cause certain potential hazard, therefore hazard rating
It is set to moderate.In the rotating speed section, hypervelocity amplitude is larger, has reached electric machine controller and the limit of the normal control of motor is turned
Speed, need to use further treatment measures to ensure traffic safety for this.Processing mode is concretely：Instrument text prompt is driven
The person of sailing " overspeed of vehicle, will limit power output, ask safe driving ", light instrument over-speed warning light, while the alarm sound that rings.Power
Limitation：The output torque of electric automobile is limited to 0 according to certain gradient.The torque limit method due to be it is gradual, because
This will not be impacted to the driving experience of driver (now because speed has met or exceeded the actual highest design of vehicle
Speed R2, driver can have in-mind anticipation to that can not continue acceleration).
3) overspeed seriously section
The rotating speed of motor corresponding to overspeed seriously section is more than electric machine controller to being driven under the normal control of motor
The maximum speed R3 of dynamic motor, i.e., the rotating speed of motor is in the range of R3- ∞.The section is that motor turns under vehicle extremity
The range intervals that speed can reach, after motor speed is more than R3, vehicle will face serious risk out of control, such as moment of torsion control
Strategy fails etc., therefore, emergent management measure must be taken when motor speed enters the section, to ensure traffic safety.
It is very big as the potential hazard caused by motor speed in the rotating speed section, therefore hazard rating is set to seriously.
In the rotating speed section, vehicle has faced out of control, and now the control strategy of motor has failed in electric machine controller, and (such as depth is weak
Magnetic control), if now occurring to close pipe failure (IGBT in electric machine controller is closed), caused counter electromotive force and dash current
Irreversible damage will likely be caused to the parts of electric machine controller, electrokinetic cell and connection high voltage bus, therefore, when electricity
Machine rotating speed, which is increased to the section, to be needed to be handled immediately.Processing mode is concretely：" vehicle is tight by instrument text prompt driver
Exceed the speed limit again, would you please slow down immediately ", drive system trouble light is lighted, while the alarm sound that rings.Power limits：Electric automobile is performed
Active short circuit operation, to ensure traffic safety.
To sum up, processing method sets forth according to the different hazard rating of motor speed, is reminded by instrument word, point
Bright drive system trouble light, the mode of alarm sound warning remind driver, continue to raise additionally by various ways restricted speed,
Vehicle and passengers inside the car are protected.Above processing method is defeated to vehicle power according to the intensification of the Motor Over Speed extent of injury
The limitation gone out is also further harsh, thus can on the premise of traffic safety is ensured farthest to driver drive experience into
Row protection.
Fig. 4 is pure electric automobile permagnetic synchronous motor actively short-circuit schematic diagram.As shown in figure 4, grasped when performing actively short circuit
When making, right side U, V, W three-phase input end be in short-circuit condition in Fig. 4, now will not because motor speed it is out of control caused by it is anti-electric
Kinetic potential causes to damage to electric machine controller and electrokinetic cell, and under active short-circuit condition, electric current flows freely inside winding, and
It is consumed in form of heat in motor stator winding, while certain braking moment can be produced.
The generally active short circuit of pure electric automobile will not produce harm to traffic safety and vehicle, thus at present its
The a kind of of safe condition is applied in the fault mechanism of pure electric automobile during as vehicle trouble.But under some specific conditions
But can damage, as that under the condition of high temperature permanent magnet can be caused permanently to demagnetize.
Neodymium iron boron (NdFeB) permanent-magnet material extensively should due to higher maximum magnetic energy product, remanent magnetism and coercivity
For in the magneto in pure electric automobile.But the most prominent weak point of NdFeB permanent-magnet materials is that heat endurance is poor.
For electric automobile PMSM drive systems, motor operation operating mode is complicated, and is limited by installing space, and PMSM power is close
Spend larger, radiating condition is poor, is easily caused the appearance of PMSM demagnetization failures.Especially for motor speed hypervelocity failure, work as execution
During three-phase active short circuit operation, steady-state shortcircuit current raises dull increase with rotating speed, quickly reaches maximum and tends towards stability.It is maximum
Steady-state shortcircuit current value is just equal with characteristic current value, is specifically shown in formula (1)：
Wherein isRepresent steady-state shortcircuit current (phase current virtual value), ψfRepresent magnetic linkage, LdD-axis inductance is represented, according to formula
(1) it can be seen that steady-state current is mainly determined by magnetic linkage and d-axis inductance parameters value.After reaching stable state, due to pure electric automobile forever
Magnetic-synchro motor characteristic electric current is generally large, and now easily causing permanent magnet if motor body temperature is higher permanently demagnetizes,
And then make the hydraulic performance decline of motor, or even can not use.
In the processing of motor hypervelocity failure, the operation of active three-phase shortcircuit is with greater need for prudent, because under fast state
The condition that motor permanent magnet permanently demagnetizes is more easily reachd, specifically block diagram as shown in Figure 5.As shown in figure 5, Motor Over Speed
Using active fault control and after reaching stable state, short circuit current is intended to characteristic current, because certain resistance be present in machine winding,
Therefore winding internal current is finally consumed with form of heat, and this will cause the rise of motor temperature, if due to failure or special
The reason motors such as operating mode (long range descending) are in overspeed condition all the time, and then motor is continuously in actively short-circuit shape
State, because characteristic current is larger, this will cause the lasting rise of motor temperature, after motor temperature reaches to a certain degree (now
Demagnetization condition is met), then motor can be caused permanently to demagnetize.
Ideally permagnetic synchronous motor d, q shaft models, wherein voltage equation are for foundation：
Wherein ud、uqRepresent d, q shaft voltage component, id、iqRepresent d, q shaft current component, Ld、LqRepresent d, q axle inductance, R
Winding resistance is represented, p represents differential operator, and n represents motor number of pole-pairs, and ω represents mechanical angular speed, ψfRepresent permanent magnet flux linkage.
During three symmetric circuit stable states, meet following constraints：
Solution obtains：
It can be obtained according to formula (4), the limit is taken after motor speed is increased to certain value, formula (4) can be converted into：
By the way that, as can be seen that actively after short circuit, stator winding internal current is mainly d shaft current components with formula (1) contrast,
And thus current component produces the armature-reaction for going magnetic.
Forgoing describe the actively specific control mode of short circuit and active short circuit under Motor Over Speed malfunction is potential hidden
Suffer from, it can be seen that under high-speed state, if motor temperature condition is met, there will be make motor to demagnetize for active fault control
Risk.Therefore, if the rotating speed of motor is located in overspeed seriously section, electric automobile is performed active short circuit operation it
Before, it is further comprising the steps of：Judge whether the temperature of motor exceedes design temperature threshold value；If so, then according to certain gradient
The output torque of electric automobile is limited to 0；If it is not, active short circuit operation then is performed to electric automobile.
Specifically, first determining whether drive system during overspeed seriously possesses the bar of active short circuit operation in the processing method
Part (temperature of motor is not less than design temperature threshold value), makes vehicle enter safety if eligible by active short circuit
State, while braking auxiliary is provided for vehicle by actively braking torque caused by short circuit, it is otherwise driving by 0 way of torque
Safety provides safeguard.
The operation principle schematic diagram of execution active short circuit operation is determined whether such as according to the current temperature of motor
Shown in Fig. 6.The judgement of motor temperature detection failure is carried out first, it is contemplated that occurs can not then to obtain motor after the failure current
Temperature value, therefore forbid actively realization of the short circuit for vehicle safety state in this case.If above failure does not occur, sentence
Whether disconnected motor is in over-temperature condition, and it is Tc that the present invention, which defines design temperature threshold values, if motor temperature exceedes the value, is recognized
Over-temperature condition is in for motor, it is contemplated that active short circuit operation can further cause the rise of motor temperature, therefore this
In the case of equally forbid actively short circuit be used for vehicle safety state realization.If motor is not in over-temperature condition, allow actively
Short circuit operation, while detect active fault control state, when active fault control terminates, directly terminate, otherwise return to upper one
Layer, continues to sentence whether section allows active short circuit operation according to motor temperature.
In the present embodiment, according to the different rotating speeds of the motor of electric automobile, different processing is carried out to electric automobile,
The safely, effectively processing to electric automobile hypervelocity is realized, ensure that vehicle safety.
In order to realize above-described embodiment, the present invention also proposes a kind of processing unit of electric automobile hypervelocity failure.Fig. 7 is this
A kind of structural representation of the processing unit for electric automobile hypervelocity failure that inventive embodiments are provided.As shown in fig. 7, this is electronic
The processing unit of overspeed of vehicle failure includes：Acquisition module 71 and processing module 72.
Acquisition module 71, the rotating speed of the motor for obtaining electric automobile.
Processing module 72, for the rotating speed according to motor, corresponding handle is carried out to electric automobile.
Further, in a kind of possible implementation of the embodiment of the present invention, processing module is specifically used for：According to drive
The rotating speed of dynamic motor, fault alarm processing and power limitation corresponding to electric automobile progress are handled.
Further, in a kind of possible implementation of the embodiment of the present invention, processing module is specifically used for：If driving
The rotating speed of motor then prompts driver slightly to surpass in slight hypervelocity section by instrument word and instrument over-speed warning light
Speed；Or if the rotating speed of motor is located in moderate hypervelocity section, pass through instrument word, instrument over-speed warning light and report
Alert sound prompting driver moderate hypervelocity, and the output torque of electric automobile is limited to 0 according to certain gradient；Or if driving
The rotating speed of motor is located in overspeed seriously section, then prompts driver by instrument word, drive system trouble light and alarm sound
Overspeed seriously, and active short circuit operation is performed to electric automobile.
Further, in a kind of possible implementation of the embodiment of the present invention, slight exceed the speed limit drives corresponding to section
The rotating speed of motor is more than the rotating speed of motor corresponding to the specified highest desin speed of electric automobile, and less than or equal to electricity
The rotating speed of motor corresponding to the highest desin speed of electrical automobile；The rotating speed of motor is more than corresponding to moderate hypervelocity section
The rotating speed of motor corresponding to the highest desin speed of electric automobile, and less than or equal to electric machine controller to motor
The maximum speed of the lower motor of normal control；The rotating speed of motor corresponding to overspeed seriously section is more than electric machine controller pair
Motor normally controls the maximum speed of lower motor.
Further, in a kind of possible implementation of the embodiment of the present invention, processing module is additionally operable to：If driving electricity
The rotating speed of machine is located in overspeed seriously section, then before active short circuit operation is performed to electric automobile, judges motor
Whether temperature exceedes design temperature threshold value；If so, the output torque of electric automobile is then limited to 0 according to certain gradient；If it is not,
Active short circuit operation then is performed to electric automobile.
It should be noted that the explanation of the processing method embodiment of the foregoing failure that exceeded the speed limit to electric automobile is also applied for
The processing unit of the electric automobile hypervelocity failure of the embodiment, here is omitted.
In the present embodiment, according to the different rotating speeds of the motor of electric automobile, different processing is carried out to electric automobile,
The safely, effectively processing to electric automobile hypervelocity is realized, ensure that vehicle safety.
The present invention also proposes a kind of mobile unit, including：Memory, processor and storage on a memory and can handled
The computer program run on device, computing device program, for realizing the electric automobile hypervelocity failure such as above-mentioned embodiment
Processing method.
The present invention also proposes a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, the journey
The processing method of the electric automobile hypervelocity failure such as above-mentioned embodiment is realized when sequence is executed by processor.
The present invention also proposes a kind of computer program product, when the instruction in computer program product is by computing device
When, the processing method of the electric automobile hypervelocity failure of execution such as above-mentioned embodiment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize custom logic function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that can the paper of print routine thereon or other suitable be situated between
Matter, because can then enter edlin, interpretation or if necessary with other for example by carrying out optical scanner to paper or other media
Suitable method is handled electronically to obtain program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware with another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized：With the logic gates for realizing logic function to data-signal from
Logic circuit is dissipated, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly be can by program come instruct correlation hardware complete, program can be stored in a kind of computer-readable recording medium
In, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.If integrated module with
The form of software function module realize and be used as independent production marketing or in use, can also be stored in one it is computer-readable
Take in storage medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (13)
1. a kind of processing method of electric automobile hypervelocity failure, it is characterised in that comprise the following steps：
Obtain the rotating speed of the motor of electric automobile；
According to the rotating speed of the motor, corresponding handle is carried out to the electric automobile.
2. processing method according to claim 1, it is characterised in that the rotating speed according to the motor, to institute
State electric automobile and carry out corresponding processing, including：
According to the rotating speed of the motor, at fault alarm processing corresponding to electric automobile progress and power limitation
Reason.
3. processing method according to claim 2, it is characterised in that the rotating speed according to the motor, to institute
Fault alarm processing corresponding to electric automobile progress and power limitation processing are stated, including：
If the rotating speed of the motor is prompted in slight hypervelocity section by instrument word and instrument over-speed warning light
Driver is slightly exceeded the speed limit；Or
If the rotating speed of the motor is located in moderate hypervelocity section, pass through instrument word, instrument over-speed warning light and report
Alert sound prompting driver moderate hypervelocity, and the output torque of the electric automobile is limited to 0 according to certain gradient；Or
If the rotating speed of the motor is located in overspeed seriously section, pass through instrument word, drive system trouble light and report
Alert sound prompting driver's overspeed seriously, and active short circuit operation is performed to the electric automobile.
4. processing method according to claim 3, it is characterised in that the driving electricity corresponding to the slight hypervelocity section
The rotating speed of machine be more than the electric automobile specified highest desin speed corresponding to the motor rotating speed, and be less than or
Equal to the rotating speed of the motor corresponding to the actual highest desin speed of the electric automobile；
The rotating speed of the motor corresponding to the moderate hypervelocity section is more than the actual highest design speed of the electric automobile
The rotating speed of the motor corresponding to degree, and less than or equal to electric machine controller to driving electricity under the normal control of motor
The maximum speed of machine；
It is normal to motor that the rotating speed of the motor corresponding to the overspeed seriously section is more than the electric machine controller
The maximum speed of the lower motor of control.
5. processing method according to claim 3, it is characterised in that if the rotating speed of the motor is positioned at described serious
Exceed the speed limit in section, then before the execution active short circuit operation to the electric automobile, in addition to：
Judge whether the temperature of motor exceedes design temperature threshold value；
If so, the output torque of the electric automobile is then limited to 0 according to certain gradient；
If it is not, active short circuit operation then is performed to the electric automobile.
A kind of 6. processing unit of electric automobile hypervelocity failure, it is characterised in that including：
Acquisition module, the rotating speed of the motor for obtaining electric automobile；
Processing module, for the rotating speed according to the motor, corresponding handle is carried out to the electric automobile.
7. processing unit according to claim 6, it is characterised in that the processing module is specifically used for：
According to the rotating speed of the motor, at fault alarm processing corresponding to electric automobile progress and power limitation
Reason.
8. processing unit according to claim 7, it is characterised in that the processing module is specifically used for：
If the rotating speed of the motor is prompted in slight hypervelocity section by instrument word and instrument over-speed warning light
Driver is slightly exceeded the speed limit；Or
If the rotating speed of the motor is located in moderate hypervelocity section, pass through instrument word, instrument over-speed warning light and report
Alert sound prompting driver moderate hypervelocity, and the output torque of the electric automobile is limited to 0 according to certain gradient；Or
If the rotating speed of the motor is located in overspeed seriously section, pass through instrument word, drive system trouble light and report
Alert sound prompting driver's overspeed seriously, and active short circuit operation is performed to the electric automobile.
9. processing unit according to claim 8, it is characterised in that the driving electricity corresponding to the slight hypervelocity section
The rotating speed of machine be more than the electric automobile specified highest desin speed corresponding to the motor rotating speed, and be less than or
Equal to the rotating speed of the motor corresponding to the highest desin speed of the electric automobile；
The rotating speed of the motor is more than the highest desin speed pair of the electric automobile corresponding to the moderate hypervelocity section
The rotating speed for the motor answered, and less than or equal to electric machine controller to motor under the normal control of motor
Maximum speed；
It is normal to motor that the rotating speed of the motor corresponding to the overspeed seriously section is more than the electric machine controller
The maximum speed of the lower motor of control.
10. processing unit according to claim 8, it is characterised in that the processing module is additionally operable to：If the driving electricity
The rotating speed of machine is located in the overspeed seriously section, then before the execution active short circuit operation to the electric automobile,
Judge whether the temperature of motor exceedes design temperature threshold value；
If so, the output torque of the electric automobile is then limited to 0 according to certain gradient；
If it is not, active short circuit operation then is performed to the electric automobile.
A kind of 11. mobile unit, it is characterised in that including：Memory, processor and it is stored on the memory and can be in institute
State the computer program run on processor, the computing device described program, for realizing as appointed in claim 1-5
The processing method of electric automobile hypervelocity failure described in one.
12. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the program
The processing method of the electric automobile hypervelocity failure as described in any in claim 1-5 is realized when being executed by processor.
13. a kind of computer program product, it is characterised in that when the instruction in the computer program product is by computing device
When, the processing method of electric automobile hypervelocity failure of the execution as described in any in claim 1-5.
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| CN201710912009.3A CN107696868A (en) | 2017-09-29 | 2017-09-29 | Processing method, device and the mobile unit of electric automobile hypervelocity failure |
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| CN201710912009.3A CN107696868A (en) | 2017-09-29 | 2017-09-29 | Processing method, device and the mobile unit of electric automobile hypervelocity failure |
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| CN108725260A (en) * | 2018-07-24 | 2018-11-02 | 北京车和家信息技术有限公司 | Overspeed protection method and device |
| CN111086415A (en) * | 2019-12-20 | 2020-05-01 | 一汽解放汽车有限公司 | Battery charging management method, device, vehicle and storage medium |
| CN112172541A (en) * | 2020-09-28 | 2021-01-05 | 武汉格罗夫氢能汽车有限公司 | Control method for fuel cell hydrogen energy automobile speed limit |
| CN113619394A (en) * | 2021-09-13 | 2021-11-09 | 合众新能源汽车有限公司 | Pure electric vehicle motor overspeed fault protection system and method thereof |
| CN115107911A (en) * | 2021-03-09 | 2022-09-27 | 宏碁股份有限公司 | Antitheft processing method for electric vehicle |
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