CN107031454A - Pure electric vehicle machine ramp accelerates and stall control method and device - Google Patents

Pure electric vehicle machine ramp accelerates and stall control method and device Download PDF

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Publication number
CN107031454A
CN107031454A CN201710004370.6A CN201710004370A CN107031454A CN 107031454 A CN107031454 A CN 107031454A CN 201710004370 A CN201710004370 A CN 201710004370A CN 107031454 A CN107031454 A CN 107031454A
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China
Prior art keywords
during
motor speed
igbt
demarcation
maximum torque
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CN201710004370.6A
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Chinese (zh)
Inventor
郭伟腾
孙韬
韩亚南
张辉
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重庆长安汽车股份有限公司
重庆长安新能源汽车有限公司
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Priority to CN201710004370.6A priority Critical patent/CN107031454A/en
Publication of CN107031454A publication Critical patent/CN107031454A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20Methods, 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
    • B60L15/2063Methods, 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 for creeping
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility
    • Y02T10/7258Optimisation of vehicle performance
    • Y02T10/7275Desired performance achievement

Abstract

Accelerate the invention discloses a kind of pure electric vehicle machine ramp and stall control method, this method includes:When pure electric automobile is in ramp acceleration or stall operating mode, motor speed is obtained;The frequency of IGBT switches is set, according to the size of the motor speed, the frequency of corresponding IGBT switches is set, and the frequency of IGBT switches increases with the increase of the motor speed.The above method, according to the size of motor speed, sets the frequency of corresponding IGBT switches, reduces the loss of IGBT switches, reduce the probability of IGBT switching damages, improve the security of running car when pure electric automobile is in ramp acceleration or locked rotor condition.In addition, accelerating the invention discloses a kind of pure electric vehicle machine ramp and stall control device.

Description

Pure electric vehicle machine ramp accelerates and stall control method and device

Technical field

The present invention relates to driving motor of pure electric automobile technical field, more particularly to a kind of pure electric vehicle machine ramp Accelerate and stall control method and device.

Background technology

Pure electric automobile refers to, using vehicle power as power, be travelled with power wheel, meets road traffic, safety law Advise the vehicle of requirements.Because the relatively conventional automobile of effect on environment is smaller, its prospect is had an optimistic view of extensively.The group of electric automobile Into including:The mechanical system such as driven by power and control system, driving force transmission, the equipment for completing assigned tasks etc..Electric power Driving and control system are the cores of electric automobile, are also the maximum difference for being different from internal-combustion engines vehicle.Driven by power and control System processed is made up of speed-regulating control device of drive motor, power supply and motor etc..

But when pure electric automobile is in ramp acceleration or stall operating mode, the control strategy of motor becomes particularly to weigh Will.General to require that motor exports peak torque, motor speed is low, and corresponding current amplitude also reaches peak value, and now insulated gate Bipolar transistor (abbreviation IGBT) is in higher switching frequency, and corresponding IGBT switching losses are also very big, can cause IGBT Temperature rises rapidly.Especially climbing repeatedly, under the acceleration of long-time ramp or locked rotor condition, in some instances it may even be possible to cause IGBT burning Ruin, driving safety is caused a hidden trouble, security declines.At present, when automobile is in above-mentioned operating mode, the control strategy of motor is not Frequency conversion, therefore, the security of Full Vehicle System can not be protected.

In summary, when how to solve pure electric automobile in ramp acceleration or stall operating mode, under the security of traveling The problem of drop, it has also become those skilled in the art's technical barrier urgently to be resolved hurrily.

The content of the invention

Accelerate it is an object of the invention to provide a kind of pure electric vehicle machine ramp and stall control method and device, when When pure electric automobile is in ramp acceleration or stall operating mode, to improve the security of traveling.

To achieve these goals, accelerate and stall controlling party the invention provides a kind of pure electric vehicle machine ramp Method, it is as follows that the method comprising the steps of:

When pure electric automobile is in ramp acceleration or stall operating mode, motor speed is obtained;

The frequency of IGBT switches is set, according to the size of the motor speed, the frequency of corresponding IGBT switches is set, and The frequency of IGBT switches increases with the increase of the motor speed.

Preferably, described to set the frequency that corresponding IGBT is switched, specific establishing method is:When 0rpm≤| N | < During 175rpm, the frequency setting of IGBT switches is 2khz;When 175rpm≤| N | during < 225rpm, IGBT switch frequency setting For 2.5khz;When 225rpm≤| N | during < 275rpm, IGBT switch frequency setting be 4khz;When 275rpm≤| N | < During 325rpm, the frequency setting of IGBT switches is 5khz;When 325rpm≤| N | during < 375rpm, IGBT switch frequency setting For 6.25khz;When 375rpm≤| N | during≤425rpm, IGBT switch frequency setting be 8khz;When | N | during > 425rpm, The frequency setting of IGBT switches is 10khz.

Preferably, after the step of completing to obtain motor speed, in addition to the step of judge motor speed, specially: If motor speed is not more than preset rotation speed V0When, then wait until after preset time threshold, then judge the rotating speed of motor, if electric Machine rotating speed is still not more than preset rotation speed V0, then it is judged as locked rotor condition, stops the torque output being switched to the IGBT, and unload Automobile power;If motor speed is more than preset rotation speed V0, then it is judged as low speed high torque output state.

Preferably, the preset time threshold is 5 seconds, the preset rotation speed V0For 50rpm.

Preferably, after the acquisition motor speed step is completed, in addition to the step of demarcation maximum torque available value, According to the size of motor speed, demarcate corresponding maximum torque available value, and the corresponding maximum torque available value of the demarcation with The increase of the motor speed and increase..

Preferably, described to demarcate corresponding maximum torque available value, specific scaling method is:When 0rpm≤| N | < During 100rpm, the torque capacity that demarcation maximum torque available value is 87.5%;When 100rpm≤| N | during < 200rpm, demarcation most The torque capacity that big available torque value is 87.5%~95%;When 200rpm≤| N | during < 450rpm, demarcate maximum torque available It is worth the torque capacity for 95%;When 450rpm≤| N | during≤500rpm, demarcation maximum torque available value is 95%~100% Torque capacity;As | N | during > 500rpm, torque capacity that demarcation maximum torque available value is 100%, wherein, | N | representative is Motor speed.

Compared to the content described in background technology, above-mentioned pure electric vehicle machine ramp accelerates and stall controlling party Method, when pure electric automobile is in ramp acceleration or locked rotor condition, according to the size of motor speed, sets corresponding IGBT switches Frequency, reduce IGBT switch loss, reduce the probability of IGBT switching damages, improve the security of running car.

Accelerate present invention also offers a kind of pure electric vehicle machine ramp and stall control device, including for detecting The velocity sensor of motor speed and the controller for adjusting the frequency that IGBT is switched, the velocity sensor and the control Device is connected, and the frequency that the controller is switched according to the size of the motor speed to the IGBT is adjusted, and described The frequency of IGBT switches increases and increased with the motor speed.

Preferably, the frequency of the setting IGBT switches, is specifically set as:When 0rpm≤| N | during < 175rpm, IGBT is opened The frequency setting of pass is 2khz;When 175rpm≤| N | during < 225rpm, IGBT switch frequency setting be 2.5khz;When 225rpm≤| N | during < 275rpm, the frequency setting of IGBT switches is 4khz;When 275rpm≤| N | during < 325rpm, IGBT is opened The frequency setting of pass is 5khz;When 325rpm≤| N | during < 375rpm, IGBT switch frequency setting be 6.25khz;When 375rpm≤| N | during≤425rpm, the frequency setting of IGBT switches is 8khz;When | N | during > 425rpm, the frequency of IGBT switches It is set as 10khz.

Preferably, the controller also has the function of judging rotating speed, and the arbitration functions are specially:If motor speed No more than preset rotation speed V0When, then wait until after preset time threshold, then judge the rotating speed of motor, if motor speed is still little In preset rotation speed V0, then it is judged as locked rotor condition, stops the torque output being switched to the IGBT, and unload automobile power;Such as Fruit motor speed is more than preset rotation speed V0, then it is judged as low speed high torque output state.

Preferably, the preset time threshold is 5 seconds, the preset rotation speed V0For 50rpm.

Preferably, the controller also has the size according to motor speed, demarcates corresponding maximum torque available value Function, and the corresponding maximum torque available value of the demarcation increases with the increase of the motor speed.

Preferably, the corresponding maximum torque available value of the demarcation, is specifically demarcated as:When 0rpm≤| N | during < 100rpm, Demarcate the torque capacity that maximum torque available value is 87.5%;When 100rpm≤| N | during < 200rpm, demarcate maximum torque available It is worth the torque capacity for 87.5%~95%;When 200rpm≤| N | during < 450rpm, demarcation maximum torque available value is 95% Torque capacity;When 450rpm≤| N | during≤500rpm, the torque capacity that demarcation maximum torque available value is 95%~100%;When | N | during > 500rpm, the torque capacity that demarcation maximum torque available value is 100%, wherein, | N | representative is motor speed.

Used because the acceleration of above-mentioned pure electric vehicle machine ramp and stall control device employ above-mentioned pure electric automobile Motor ramp accelerates and stall control method, and the above method has above-mentioned technique effect, employs the device of the above method There should be corresponding technique effect, will not be repeated here.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis The accompanying drawing of offer obtains other accompanying drawings.

Fig. 1 is that pure electric vehicle machine ramp provided in an embodiment of the present invention accelerates and stall control method flow chart;

Fig. 2 is that pure electric vehicle machine ramp provided in an embodiment of the present invention accelerates and stall control principle drawing;

Fig. 3 is motor speed provided in an embodiment of the present invention and the corresponding diagram of the IGBT frequencies switched;

Fig. 4 is the corresponding diagram of motor speed provided in an embodiment of the present invention and maximum torque available.

In figure 1 above, motor speed 100, the frequency 200 of setting IGBT switches are obtained.

Embodiment

The core of the present invention is to provide a kind of pure electric vehicle machine ramp and accelerated and stall control method and device, when When pure electric automobile is in ramp acceleration or stall operating mode, to improve the security of traveling.

In order that those skilled in the art more fully understands the technical scheme that provides of the present invention, below in conjunction with accompanying drawing and The present invention is described in further detail for specific embodiment.

As Figure 1-4, pure electric vehicle machine ramp provided in an embodiment of the present invention accelerates and stall control method, This method includes:

When pure electric automobile is in ramp acceleration or stall operating mode, motor speed 100 is obtained;

The frequency 200 of IGBT switches is set, according to the size of motor speed, the frequency of corresponding IGBT switches is set, and The frequency of IGBT switches increases with the increase of motor speed.

Compared to the content described in background technology, above-mentioned pure electric vehicle machine ramp accelerates and stall controlling party Method, when pure electric automobile is in ramp acceleration or locked rotor condition, according to the size of motor speed, sets corresponding IGBT switches Frequency, reduce IGBT switch loss, reduce the probability of IGBT switching damages, improve the security of running car.

Further, the frequency of above-mentioned setting corresponding IGBT switches, specific establishing method is:When 0rpm≤| N | < During 175rpm, the frequency setting of IGBT switches is 2khz;When 175rpm≤| N | during < 225rpm, IGBT switch frequency setting For 2.5khz;When 225rpm≤| N | during < 275rpm, IGBT switch frequency setting be 4khz;When 275rpm≤| N | < During 325rpm, the frequency setting of IGBT switches is 5khz;When 325rpm≤| N | during < 375rpm, IGBT switch frequency setting For 6.25khz;When 375rpm≤| N | during≤425rpm, IGBT switch frequency setting be 8khz;When | N | during > 425rpm, The frequency setting of IGBT switches is 10khz, wherein, | N | represent motor speed.By according to taking above-mentioned subdivision IGBT to become frequency range Interval strategy so that each adjustment gradient is relatively small, and is proved by lot of experiments, when motor is in low-speed running When (refer generally to motor be in below 500rpm), take above-mentioned strategy, the burn-out rate of IGBT switches is substantially reduced, further increase The security of Full Vehicle System.It is appreciated of course that above-mentioned value is only a kind of preferred act of the embodiment of the present invention Example, can also choose other numerical value.

Further, this method is after completing to obtain motor speed 100, in addition to the step of judge motor speed, specifically For:If motor speed is not more than preset rotation speed V0When, then wait until after preset time threshold, then judge the rotating speed of motor, such as Fruit motor speed is still not more than preset rotation speed V0, then it is judged as locked rotor condition, stops the torque output being switched to IGBT, and unload Automobile power;If motor speed is more than preset rotation speed V0, then it is judged as low speed high torque output state.Pass through above-mentioned judgement electricity The step of machine rotating speed, it can be determined that go out vehicle condition for locked rotor condition or low speed high torque output state, and when in stifled When turning state, stop the torque output being switched to IGBT, and unload automobile power, electric system is played a protective role.

Further, above-mentioned preset time threshold is 5 seconds, preset rotation speed V0For 50rpm.Judge that motor speed 300 has Body is:If motor speed is not more than 50rpm, after waiting 5 seconds, then the rotating speed of motor is judged, if motor speed is still little In 50rpm, then it is judged as locked rotor condition, stops the torque output being switched to IGBT, and unload automobile power;If motor speed More than 50rpm, then it is judged as low speed high torque output state.It is that above-mentioned preset time threshold is for 5 seconds and pre- that will be understood If rotating speed V0A kind of only preferred citing of the embodiment of the present invention, above-mentioned preset time threshold is when can also be other in 5 seconds Between be worth;While preset rotation speed V0Other tachometer values that can be drawn with those skilled in the art according to correspondence motor.

Further, after the acquisition step of motor speed 100 is completed, in addition to demarcation maximum torque available value, according to The size of motor speed, demarcates corresponding maximum torque available value, and demarcate corresponding maximum torque available value with motor speed Increase and increase.By above-mentioned demarcation maximum torque available value, according to different motor speeds, adjustment motor can be exported Torque capacity, reduce further the probability of IGBT damages.

Further, the corresponding maximum torque available value of above-mentioned demarcation, specific scaling method is:When 0rpm≤| N | < During 100rpm, the torque capacity that demarcation maximum torque available value is 87.5%;When 100rpm≤| N | during < 200rpm, demarcation most The torque capacity that big available torque value is 87.5%~95%;When 200rpm≤| N | during < 450rpm, demarcate maximum torque available It is worth the torque capacity for 95%;When 450rpm≤| N | during≤500rpm, demarcation maximum torque available value is 95%~100% Torque capacity;As | N | during > 500rpm, torque capacity that demarcation maximum torque available value is 100%, wherein, | N | representative is Motor speed.

It is appreciated of course that the calibration value of above-mentioned maximum torque available value is only a kind of excellent of the embodiment of the present invention The citing of choosing, can also be other numerical value.

It should be noted that those skilled in the art will readily appreciate that, needed using this method in electronic vapour Increase the module that different IGBT switching frequencies are set according to motor speed in the electric machine controller software of car.

Accelerate present invention also offers a kind of pure electric vehicle machine ramp and stall control device, including for detecting The velocity sensor of motor speed and the controller for adjusting the frequency that IGBT is switched, velocity sensor are connected with controller, The IGBT frequencies switched are adjusted according to the size of motor speed for controller, and the frequency of IGBT switches increases with motor speed Increase greatly.

Further, the frequency of above-mentioned setting IGBT switches, is more preferably set as:When 0rpm≤| N | during < 175rpm, The frequency setting of IGBT switches is 2khz;When 175rpm≤| N | during < 225rpm, IGBT switch frequency setting be 2.5khz; When 225rpm≤| N | during < 275rpm, IGBT switch frequency setting be 4khz;When 275rpm≤| N | during < 325rpm, IGBT The frequency setting of switch is 5khz;When 325rpm≤| N | during < 375rpm, IGBT switch frequency setting be 6.25khz;When 375rpm≤| N | during≤425rpm, the frequency setting of IGBT switches is 8khz;When | N | during > 425rpm, the frequency of IGBT switches It is set as 10khz wherein, | N | representative is motor speed.By according to taking above-mentioned subdivision IGBT to become the interval strategy of frequency range, So that each adjustment gradient is relatively small, and proved by lot of experiments, (electricity is referred generally to when motor is in low-speed running Machine is in below 500rpm), above-mentioned strategy is taken, the burn-out rate of IGBT switches is substantially reduced, and further increases Full Vehicle System Security.It is appreciated of course that above-mentioned value is only a kind of preferred citing of the embodiment of the present invention, it can also select Take other numerical value.

Controller noted above also has the function of judging rotating speed, and arbitration functions are specially:If motor speed is not more than default During rotating speed 50rpm, then after waiting 5 seconds, then the rotating speed of motor is judged, if motor speed is still not more than preset rotation speed 50rpm, It is judged as locked rotor condition, stops the torque output being switched to IGBT, and unload automobile power;If motor speed is more than default turn Fast 50rpm, then be judged as low speed high torque output state.Certain above-mentioned preset rotation speed 50rpm and preset time threshold 5 seconds, only Only it is a kind of preferred citing, can also be other numerical value.

Controller noted above also has the size according to motor speed, demarcates the function of corresponding maximum torque available value, and Corresponding maximum torque available value is demarcated with the increase of motor speed to increase.Specifically it is demarcated as:When 0rpm≤| N | < 100rpm When, the torque capacity that demarcation maximum torque available value is 87.5%;When 100rpm≤| N | during < 200rpm, demarcation is maximum available Torque value is 87.5%~95% torque capacity;When 200rpm≤| N | during < 450rpm, demarcation maximum torque available value be 95% torque capacity;When 450rpm≤| N | during≤500rpm, the maximum that demarcation maximum torque available value is 95%~100% Torque;When | N | during > 500rpm, the torque capacity that demarcation maximum torque available value is 100%, wherein, | N | representative is motor Rotating speed.

It is understood that controller noted above generally comprises collecting unit, processing unit and regulation to realize above-mentioned functions Unit;Wherein, collecting unit, for gathering motor speed information, and by motor speed information transmission to control unit;Processing is single Member, for the setting value according to the corresponding IGBT of the motor speed acquisition of information frequencies switched, and is sent to regulation by setting value Unit;Adjustment unit, for the IGBT frequencies switched to be adjusted according to setting value.

Used because the acceleration of above-mentioned pure electric vehicle machine ramp and stall control device employ above-mentioned pure electric automobile Motor ramp accelerates and stall control method, and the above method has above-mentioned technique effect, employs the device of the above method There should be corresponding technique effect, will not be repeated here.

, can be with it should be noted that above-mentioned pure electric vehicle machine ramp accelerates and stall control method and device Applied to level road operating mode.

Pure electric vehicle machine ramp provided by the present invention is accelerated and stall control method, system and device above It is described in detail.It should be noted that each embodiment in this specification is described by the way of progressive, Mei Geshi Apply that example stresses be all between the difference with other embodiment, each embodiment identical similar part mutually referring to .

It should also be noted that, herein, such as first and second or the like relational terms are used merely to one Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation There is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain Lid nonexcludability is included, so that article or equipment including a series of key elements not only include those key elements, but also Including other key elements being not expressly set out, or also include for this article or the intrinsic key element of equipment.Do not having In the case of more limitations, the key element limited by sentence "including a ...", it is not excluded that including the article of above-mentioned key element Or also there is other identical element in equipment.

Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said The bright method and its core concept for being only intended to help to understand the present invention.It should be pointed out that for the ordinary skill of the art For personnel, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improvement Also fallen into modification in the protection domain of the claims in the present invention.

Claims (12)

1. a kind of pure electric vehicle machine ramp accelerates and stall control method, it is characterised in that this method includes:
When pure electric automobile is in ramp acceleration or stall operating mode, motor speed (100) is obtained;
The frequency (200) of IGBT switches is set, according to the size of the motor speed, the frequency of corresponding IGBT switches is set, And the frequency of IGBT switches increases with the increase of the motor speed.
2. the method as described in claim 1, it is characterised in that the frequency (200) of the setting IGBT switches, specific setting side Method is:When 0rpm≤| N | during < 175rpm, IGBT switch frequency setting be 2khz;When 175rpm≤| N | during < 225rpm, The frequency setting of IGBT switches is 2.5khz;When 225rpm≤| N | during < 275rpm, IGBT switch frequency setting be 4khz; When 275rpm≤| N | during < 325rpm, IGBT switch frequency setting be 5khz;When 325rpm≤| N | during < 375rpm, IGBT The frequency setting of switch is 6.25khz;When 375rpm≤| N | during≤425rpm, IGBT switch frequency setting be 8khz;When | N | during > 425rpm, the frequency setting of IGBT switches is 10khz.
3. the method as described in claim 1, it is characterised in that after the step of completing to obtain motor speed (100), also wrap The step of judging motor speed is included, is specially:If motor speed is not more than preset rotation speed V0When, then wait until preset time threshold After value, then the rotating speed of motor is judged, if motor speed is still not more than preset rotation speed V0, then it is judged as locked rotor condition, stopping pair The torque output of the IGBT switches, and unload automobile power;If motor speed is more than preset rotation speed V0, then it is judged as low speed Big torque output state.
4. method as claimed in claim 3, it is characterised in that the preset time threshold is 5 seconds, the preset rotation speed V0For 50rpm。
5. the method as described in claim 1, it is characterised in that after the step of completing acquisition motor speed (100), The step of also including demarcation maximum torque available value, according to the size of motor speed, corresponding maximum torque available value is demarcated, and The corresponding maximum torque available value of the demarcation increases with the increase of the motor speed.
6. method as claimed in claim 5, it is characterised in that the corresponding maximum torque available value of the demarcation, specific demarcation Method is:When 0rpm≤| N | during < 100rpm, the torque capacity that demarcation maximum torque available value is 87.5%;When 100rpm≤| N | during < 200rpm, the torque capacity that demarcation maximum torque available value is 87.5%~95%;When 200rpm≤| N | < 450rpm When, the torque capacity that demarcation maximum torque available value is 95%;When 450rpm≤| N | during≤500rpm, demarcation is maximum available to be turned Square value is 95%~100% torque capacity;When | N | during > 500rpm, demarcation maximum torque available value turns for 100% maximum Square, wherein, | N | representative is motor speed.
7. a kind of pure electric vehicle machine ramp accelerates and stall control device, it is characterised in that including for detecting motor The velocity sensor of rotating speed and the controller for adjusting the frequency that IGBT is switched, the velocity sensor connect with the controller Connect, the IGBT frequencies switched are adjusted according to the size of the motor speed for the controller, and the IGBT is opened The frequency of pass increases and increased with the motor speed.
8. pure electric vehicle machine ramp as claimed in claim 7 accelerates and stall control device, it is characterised in that described The frequency of IGBT switches is set, is specifically set as:When 0rpm≤| N | during < 175rpm, IGBT switch frequency setting be 2khz; When 175rpm≤| N | during < 225rpm, IGBT switch frequency setting be 2.5khz;When 225rpm≤| N | during < 275rpm, The frequency setting of IGBT switches is 4khz;When 275rpm≤| N | during < 325rpm, IGBT switch frequency setting be 5khz;When 325rpm≤| N | during < 375rpm, the frequency setting of IGBT switches is 6.25khz;When 375rpm≤| N | during≤425rpm, The frequency setting of IGBT switches is 8khz;When | N | during > 425rpm, the frequency setting of IGBT switches is 10khz.
9. pure electric vehicle machine ramp as claimed in claim 7 accelerates and stall control device, it is characterised in that described Controller also has the function of judging rotating speed, and the arbitration functions are specially:If motor speed is not more than preset rotation speed V0When, Then wait until after preset time threshold, then judge the rotating speed of motor, if motor speed is still not more than preset rotation speed V0, then judge For locked rotor condition, stop the torque output being switched to the IGBT, and unload automobile power;If motor speed is more than default turn Fast V0, then it is judged as low speed high torque output state.
10. pure electric vehicle machine ramp as claimed in claim 9 accelerates and stall control device, it is characterised in that institute It is 5 seconds, the preset rotation speed V to state preset time threshold0For 50rpm.
11. pure electric vehicle machine ramp as claimed in claim 7 accelerates and stall control device, it is characterised in that institute Controller is stated also with the size according to motor speed, the function of corresponding maximum torque available value, and the demarcation pair is demarcated The maximum torque available value answered increases with the increase of the motor speed.
12. pure electric vehicle machine ramp as claimed in claim 11 accelerates and stall control device, it is characterised in that institute The corresponding maximum torque available value of demarcation is stated, is specifically demarcated as:When 0rpm≤| N | during < 100rpm, demarcate maximum torque available It is worth the torque capacity for 87.5%;When 100rpm≤| N | during < 200rpm, demarcation maximum torque available value is 87.5%~95% Torque capacity;When 200rpm≤| N | during < 450rpm, the torque capacity that demarcation maximum torque available value is 95%;When 450rpm≤| N | during≤500rpm, the torque capacity that demarcation maximum torque available value is 95%~100%;When | N | > 500rpm When, the torque capacity that demarcation maximum torque available value is 100%, wherein, | N | representative is motor speed.
CN201710004370.6A 2017-01-04 2017-01-04 Pure electric vehicle machine ramp accelerates and stall control method and device CN107031454A (en)

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CN102350958A (en) * 2011-06-30 2012-02-15 奇瑞汽车股份有限公司 Motor locked-rotor protecting method of electric car electric driving system
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CN103802688A (en) * 2012-11-12 2014-05-21 上海电驱动股份有限公司 Low-speed torque output capability improving method for vehicle motor
CN104986054A (en) * 2015-06-17 2015-10-21 安徽江淮汽车股份有限公司 Locked rotor frequency conversion control method and device for drive motors

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CN102350958A (en) * 2011-06-30 2012-02-15 奇瑞汽车股份有限公司 Motor locked-rotor protecting method of electric car electric driving system
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