CN107121637A - Motor detection method and device - Google Patents
Motor detection method and device Download PDFInfo
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- CN107121637A CN107121637A CN201710446116.1A CN201710446116A CN107121637A CN 107121637 A CN107121637 A CN 107121637A CN 201710446116 A CN201710446116 A CN 201710446116A CN 107121637 A CN107121637 A CN 107121637A
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- Prior art keywords
- motor
- pressure drop
- thermistor
- temperature
- malfunction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Abstract
The present invention proposes a kind of motor detection method and device, wherein, method includes：The pressure drop of thermistor on motor is gathered using default voltage collection circuit；An inspection policies are gradually chosen from default all inspection policies and are used as target detection strategy；Wherein, the different inspection policies of different types of fault detect correspondence；According to pressure drop and target detection strategy, motor state in which under the corresponding target type of target detection strategy is determined；Wherein state includes malfunction and normal condition.With it, can realize only need to set thermistor on motor, the pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to improve traffic safety.
Description
Technical field
The present invention relates to Vehicle Engineering, more particularly to a kind of motor detection method and device.
Background technology
Under the promotion of the various policies favourable of government and the trying to explore of each Automobile Enterprises, current pure electric automobile is obtained
To extensive use.Pure electric automobile realizes that vehicle is travelled by power wheel, and motor driving and control are to vehicle performance shadow
Ring great, the emphasis as business research.
With the development of permanent-magnet material, Power Electronic Technique, control theory, motor manufacturing and signal transacting hardware, forever
M.S motor has obtained commonly used, and the motor of permanent-magnet synchronous is due to high efficiency, height output torque, height
The advantages of power density and good dynamic property, turn into the main flow of pure electric automobile drive system at present.But in failure
Under state, the motor of permanent magnetism may can so produce serious harm, such as permanent magnet is permanent still in work to its body
Property demagnetization, failure of insulation, bearing lubrication failure etc..Serious shadow will be caused to traffic safety when problem above occurs for motor
Ring, therefore, the fault condition detection of pure electric automobile becomes the emphasis of enterprises pay attention, as enterprise's problem urgently to be resolved hurrily.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, first purpose of the present invention is to propose a kind of motor detection method, it need to only driven with realizing
Thermistor is set on motor, and the pressure drop and inspection policies with reference to thermistor can just complete the failure inspection to motor
Survey, so as to improve traffic safety, for solving existing pure electric automobile in the process of running, drive system breaks down still
In work so as to the problem of causing potential safety hazard.
Second object of the present invention is to propose a kind of motor detection means.
Third object of the present invention is to propose another motor detection means.
Fourth object of the present invention is to propose a kind of computer program product.
The 5th purpose of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
For up to above-mentioned purpose, first aspect present invention embodiment proposes a kind of motor detection method, including：Utilize
The pressure drop of thermistor on default voltage collection circuit collection motor；Gradually chosen from default all inspection policies
One inspection policies is used as target detection strategy；Wherein, the different inspection policies of different types of fault detect correspondence；According to institute
Pressure drop and the target detection strategy are stated, is determined under the corresponding target type of the target detection strategy residing for the motor
State；Wherein state includes malfunction and normal condition.
The motor detection method of the embodiment of the present invention, motor is gathered by using default voltage collection circuit
The pressure drop of upper thermistor, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；
Wherein, the different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection
Motor state in which under the corresponding target type of strategy.In the present embodiment, temperature-sensitive electricity need to be only set on motor
Resistance, pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to improve row
Car safety.
For up to above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of motor detection means, including：Collection
Module, the pressure drop for gathering thermistor on motor using default voltage collection circuit；Module is chosen, for gradually
An inspection policies are chosen from default all inspection policies and are used as target detection strategy；Wherein, different types of failure inspection
Survey the different inspection policies of correspondence；Determining module, for according to the pressure drop and the target detection strategy, determining the target
The motor state in which under the corresponding target type of inspection policies；Wherein state includes malfunction and normal shape
State.
The motor detection means of the embodiment of the present invention, motor is gathered by using default voltage collection circuit
The pressure drop of upper thermistor, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；
Wherein, the different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection
Motor state in which under the corresponding target type of strategy.In the present embodiment, temperature-sensitive electricity need to be only set on motor
Resistance, pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to improve row
Car safety.
For up to above-mentioned purpose, third aspect present invention embodiment proposes a kind of motor detection means, including：Processing
Device and memory；Wherein, the processor is run and institute by reading the executable program code stored in the memory
The corresponding program of executable program code is stated, for realizing the motor detection side of above-mentioned first aspect embodiment proposition
Method.
The motor detection means of the embodiment of the present invention, motor is gathered by using default voltage collection circuit
The pressure drop of upper thermistor, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；
Wherein, the different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection
Motor state in which under the corresponding target type of strategy.In the present embodiment, temperature-sensitive electricity need to be only set on motor
Resistance, pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to improve row
Car safety.
For up to above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of computer program product, calculated when described
Instruction in machine program product by computing device when, perform the motor inspection that above-mentioned first aspect embodiment of the invention is proposed
Survey method.
The computer program product of the embodiment of the present invention, is gathered on motor by using default voltage collection circuit
The pressure drop of thermistor, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；Its
In, the different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection plan
Motor state in which under slightly corresponding target type.In the present embodiment, only thermistor need to be set on motor,
Pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to improve driving peace
Entirely.
For up to above-mentioned purpose, fifth aspect present invention embodiment proposes a kind of non-provisional computer-readable recording mediums,
It is stored thereon with computer program, it is characterised in that the computer program realizes that above-mentioned first aspect is real when being executed by processor
Apply the motor detection method of example proposition.
The non-provisional computer-readable recording mediums of the embodiment of the present invention, are gathered by using default voltage collection circuit
The pressure drop of thermistor on motor, gradually chooses an inspection policies from default all inspection policies and is examined as target
Survey strategy；Wherein, the different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, it is determined that
Motor state in which under the corresponding target type of target detection strategy.In the present embodiment, it need to only be set on motor
Thermistor is put, the pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to
To improve traffic safety.
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 be readily appreciated that, wherein：
Fig. 1 is a kind of schematic flow sheet of motor detection method provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of the setting thermistor on motor provided in an embodiment of the present invention；
Fig. 3 is voltage collection circuit schematic diagram in the embodiment of the present invention；
Fig. 4 is the schematic flow sheet of another motor detection method provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of another motor detection method provided in an embodiment of the present invention；
Fig. 6 is the schematic flow sheet of another motor detection method provided in an embodiment of the present invention；
Fig. 7 is the schematic flow sheet of another motor detection method provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation of motor detection means provided in an embodiment of the present invention；
Fig. 9 is the structural representation of another motor detection means provided in an embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings the motor detection method and device of the embodiment of the present invention are described.
Fig. 1 is a kind of schematic flow sheet of motor detection method provided in an embodiment of the present invention.
As shown in figure 1, the motor detection method comprises the following steps：
S101, the pressure drop of thermistor on motor is gathered using default voltage collection circuit.
Wherein, the number of thermistor can be one can also be it is multiple, when thermistor for it is multiple when, can be according to
Default to be disposed on motor, default at intervals of what is pre-set, the number of mark thermistor is N, this hair
Bright embodiment is using the number of thermistor as 3 examples, i.e. N=3, then default interval for example can be 360 °/3=120 °.This
Place is it is to be appreciated that thermistor heterogeneous can also be laid on motor, and the laying to thermistor herein is not limited
System.
The embodiment of the present invention uses multiple thermistors, by the Redundancy Design of thermistor, ensure that motor
Effective acquisition of temperature.
For example, with reference to Fig. 2, Fig. 2 shows for a kind of setting thermistor on motor provided in an embodiment of the present invention
Be intended to, arrange three thermistors in the motor stator winding coil, respectively thermistor A, thermistor B with
And thermistor C, and these three thermistors are evenly distributed on motor according to 120 ° of intervals.
Alternatively, in N=3,3 road voltage collection circuits should gather the pressure drop of three thermistors, due to three electricity
Press the structure of Acquisition Circuit completely the same, therefore, only with example all the way.For example, with reference to Fig. 3, Fig. 3 is electricity in the embodiment of the present invention
The thermistor in Acquisition Circuit schematic diagram, motor stator winding is pressed to be connected in series in voltage collection circuit, temperature-sensitive electricity
Resistance is connected with resistance R1, and according to the difference of motor temperature, the resistance of thermistor can change, now, left side in Fig. 3
Voltage at test point 2 can also change, wherein, pressure of the voltage corresponding power voltage in thermistor at test point 2
Drop；Voltage at test point 2 is acquired (in figure after capacitance-resistance (RC) low-pass filter circuit that R2 and C11 is constituted by A/D
At right side test point 1), ignore the influence of interference, the voltage of test point 1 is equal with the voltage at 2.R1 in the voltage collection circuit
The resistance and supply voltage of resistance be, it is known that therefore, can be according to Ohm's law meter after the pressure drop in obtaining thermistor
The resistance of the thermistor is calculated, and then obtains motor temperature value.Wherein, on the premise of no failure, three can be taken
The peak of thermistor temp in the voltage collection circuit of road is used as motor temperature.
S102, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；Wherein,
The different inspection policies of different types of fault detect correspondence.
In an embodiment of the present invention, different types of failure can include：Temperature detection failure, voltage acquisition circuit event
Barrier, temperature checking failure etc..Wherein, voltage acquisition circuit failure includes：Acquisition circuit is to power supply short circuit failure, acquisition circuit pair
Ground short circuit failure, and acquisition circuit open circuit fault.
Alternatively, the different inspection policies of different types of fault detect correspondence, for example, voltage acquisition circuit fault detect
Corresponding inspection policies inspection policies corresponding with temperature checking fault detect are different, and therefore, the embodiment of the present invention has multiple
Inspection policies, gradually can therefrom choose an inspection policies as target detection strategy, to determine that motor is examined in target
State in which under tactful corresponding target type is surveyed, is capable of the state of complete detection motor, it is ensured that the safety of driving.
S103, according to pressure drop and target detection strategy, determines motor under the corresponding target type of target detection strategy
State in which；Wherein state includes malfunction and normal condition.
Alternatively, when target detection strategy inspection policies corresponding for temperature detection fault detect, temperature-sensitive can be passed through
The pressure drop of resistance obtains its resistance, and the resistance of thermistor pre-set and reflecting for temperature are inquired about according to the resistance of thermistor
Relation is penetrated, the Current Temperatures of thermistor is therefrom obtained, afterwards, whether motor is determined according to the Current Temperatures of thermistor
In temperature detection malfunction, or, directly determine whether motor is in temperature detection according to the pressure drop of thermistor
Malfunction.
Alternatively, can be direct when target detection strategy inspection policies corresponding for voltage acquisition circuit fault detect
Determine whether motor is in voltage acquisition circuit malfunction according to the pressure drop of thermistor.
Alternatively, can be according to temperature-sensitive when target detection strategy inspection policies corresponding for temperature checking fault detect
The pressure drop of resistance obtains the current temperature of thermistor, then, and driving electricity is determined according to the temperature difference of thermistor between any two
Whether machine is in temperature checking malfunction.
The motor detection method of the present embodiment, heat on motor is gathered by using default voltage collection circuit
The pressure drop of quick resistance, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；Wherein,
The different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection strategy
Motor state in which under corresponding target type.In the present embodiment, only thermistor need to be set on motor, tied
The pressure drop and inspection policies for closing thermistor can just complete the fault detect to motor, so as to improve driving peace
Entirely.
For clear explanation above-described embodiment, referring to Fig. 4, on the basis of embodiment as shown in Figure 1, step S103 is specific
Including following sub-step：
S401, judges pressure drop whether in first voltage threshold value and second voltage threshold value, if so, S407 is performed, otherwise,
Perform S402.
For thermistor, for example, with reference to Fig. 3, under normal circumstances, its resistance is in certain threshold range, therefore,
The corresponding voltage in its two ends also should mark the thermistor corresponding voltage in two ends under normal circumstances in rational threshold range
In [Vsl,Vsh] between, wherein, 0<Vsl<Vsh<Supply voltage, then first voltage threshold value can be Vsl, second voltage threshold value can be with
For Vsh, and first voltage threshold value and second voltage threshold value can be set in advance in the plug-in of vehicle, it is easy to accomplish, operation
Simply.
Alternatively, pressure drop is judged whether in first voltage threshold value and second voltage threshold value, when pressure drop is in the first electricity
When pressing in threshold value and second voltage threshold value, show that motor is not in temperature detection malfunction, directly terminate handling process；
When pressure drop is not in first voltage threshold value and second voltage threshold value, triggering following step.
S402, judges whether to maintain preset duration, if so, performing S403, otherwise, performs S407.
In an embodiment of the present invention, preset duration is pre-set, preset duration can by vehicle plug-in
Preset, or, preset duration can be configured by human pilot, and this is not restricted, and preset duration is, for example, Tk。
It should be noted that in the starting stage of electric machine controller after the power-up, internal supply voltage is unstable, therefore need
Be delayed preset duration, after power good to be powered, then is driven motor temperature fault detect, can be prevented effectively from due to being
Fault misdescription caused by system interference.
Therefore, when pressure drop is not in first voltage threshold value and second voltage threshold value and maintains preset duration, it is determined that driving
Dynamic motor is in temperature detection malfunction；It is not in first voltage threshold value and second voltage threshold value and does not maintain pre- in pressure drop
If during duration, terminating handling process.
S403, determines that motor is in temperature detection malfunction.
S404, judges pressure drop whether in tertiary voltage threshold value and the 4th voltage threshold, if so, S407 is performed, otherwise,
Perform S405.
For example, with reference to Fig. 3, the voltage collection circuit shown in Fig. 3 is additionally operable to the detection of voltage acquisition circuit failure, including：
Acquisition circuit can specifically pass through to power supply short circuit failure, acquisition circuit shorted to earth failure, and acquisition circuit open circuit fault
Test point 1 goes out A/D collection voltages to be judged：
(1) acquisition circuit is to power supply short circuit failure：To test point in power supply short circuit corresponding diagram 32 and power supply short circuit, now
A/D collects magnitude of voltage at test point 1 near supply voltage 5V.
(2) acquisition circuit shorted to earth failure：Test point is adopted with ground short circuit, now A/D at 2 in shorted to earth corresponding diagram 3
Collect the magnitude of voltage at test point 1 near 0V.
(3) acquisition circuit open circuit fault：Occurs disconnection fault in breaking corresponding diagram 3 at test point 1, now A/D is collected
Magnitude of voltage at the point is near supply voltage 5V.
Due to after sampling circuit occurs to power supply short circuit, shorted to earth and open circuit fault, clicking on, controller is actual to be adopted
The pressure drop of the thermistor collected should therefore, it can mark thermistor failure near supply voltage (5V) or ground (0V)
Voltage threshold is VSTGAnd VSTB, wherein, 0<VSTG<VSTB<Supply voltage, then tertiary voltage threshold value can be VSTG, the 4th voltage threshold
Value can be VSTG, when pressure drop is in [VSTG,VSTB] it is interior when, show that motor is not in voltage acquisition circuit malfunction, directly
Binding beam handling process；When pressure drop is not in [VSTG,VSTB] it is interior when, triggering following step.
In this step, tertiary voltage threshold value and the 4th voltage threshold can be set in advance in the plug-in of vehicle, easily
It is simple to operate in realization.
S405, judges whether to maintain preset duration, if so, performing S406, otherwise, performs S407.
It should be noted that in the starting stage of electric machine controller after the power-up, internal supply voltage is unstable, therefore need
Be delayed preset duration, after power good to be powered, then is driven electric moter voltage acquisition circuit fault detect, can effectively keep away
Exempt from due to fault misdescription caused by system interference.
Therefore, when pressure drop is not in tertiary voltage threshold value and the 4th voltage threshold and maintains preset duration, it is determined that driving
Dynamic motor is in voltage acquisition circuit malfunction；It is not in tertiary voltage threshold value and the 4th voltage threshold and does not tie up in pressure drop
When holding preset duration, terminate handling process.
S406, determines that motor is in voltage acquisition circuit malfunction.
S407, terminates.
It should be noted that do not have strict sequential relationship in Fig. 4 between judgment step S401 and S404, can be parallel
Ground is performed, and can also sequentially be performed, is not limited herein, for example, S401 can be first carried out, then perform S404, can also be first
S404 is performed, then performs S401, is not limited herein.
The motor detection method of the present embodiment, by being not in first voltage threshold value and second voltage threshold value in pressure drop
During interior and maintenance preset duration, determine that motor is in temperature detection malfunction；Tertiary voltage threshold value is not in pressure drop
With in the 4th voltage threshold and maintain preset duration when, determine motor be in voltage acquisition circuit malfunction, can keep away
Exempt from due to fault misdescription caused by system interference.
For clear explanation above-described embodiment, referring to Fig. 5, on the basis of embodiment as shown in Figure 1, step S103 may be used also
With including following sub-step：
S501, the resistance of thermistor is obtained according to pressure drop.
As shown in figure 3, the resistance and supply voltage of R1 resistance are, it is known that therefore getting thermistor in Acquisition Circuit
Pressure drop after, the resistance of the thermistor can be calculated according to Ohm's law, for example, mark thermistor pressure drop be VPT, then
Electric currentTherefore, the resistance of thermistor
S502, the Current Temperatures of thermistor are determined according to resistance.
It is alternatively possible to the resistance of thermistor and the mapping relations of temperature are pre-set in the plug-in of vehicle,
It is determined that after the resistance of thermistor, it is possible to inquire about above-mentioned mapping relations, the Current Temperatures of thermistor are therefrom determined, it is easy to
Realize and simple to operate.
S503, judges Current Temperatures whether in the first temperature threshold and second temperature threshold value, if so, S506 is performed,
Otherwise, S504 is performed.
Because thermistor is divided into positive temperature coefficient and negative temperature coefficient, the embodiment of the present invention to use positive temperature coefficient
Thermistor example.For example, with reference to Fig. 3, under normal circumstances, the resistance of thermistor is in certain scope, therefore, its
Current Temperatures also should be in certain scope.The temperature of thermistor under normal circumstances is marked in [Tsl,Tsh] between, wherein,
Tsl<Tsh, then the first temperature threshold can be Tsl, second temperature threshold value can be Tsh, and the first temperature threshold and second temperature threshold
Value can be set in advance in the plug-in of vehicle, it is easy to accomplish, it is simple to operate.
Alternatively, Current Temperatures are judged whether in the first temperature threshold and second temperature threshold value, at Current Temperatures
When in the first temperature threshold and second temperature threshold value, show that motor is not in temperature detection malfunction, directly terminate
Handling process；When Current Temperatures are not in the first temperature threshold and second temperature threshold value, triggering following step.
S504, judges whether to maintain preset duration, if so, performing S505, otherwise, performs S506.
It should be noted that in the starting stage of electric machine controller after the power-up, internal supply voltage is unstable, therefore need
Be delayed preset duration, after power good to be powered, then is driven motor temperature fault detect, can be prevented effectively from due to being
Fault misdescription caused by system interference.
Alternatively, when Current Temperatures are not in the first temperature threshold and second temperature threshold value and maintain preset duration,
Determine that motor is in temperature detection malfunction；It is not in Current Temperatures in the first temperature threshold and second temperature threshold value
And when not maintaining preset duration, terminate handling process.
S505, determines that motor is in temperature detection malfunction.
S506, terminates.
The motor detection method of the present embodiment, it is true according to resistance by obtaining the resistance of thermistor according to pressure drop
Determine the Current Temperatures of thermistor, it is easy to accomplish and it is simple to operate.By being not in the first temperature threshold and in Current Temperatures
In two temperature thresholds and when maintaining preset duration, determine that motor is in temperature detection malfunction, can be prevented effectively from by
The fault misdescription caused by system interference.
For clear explanation above-described embodiment, referring to Fig. 6, on the basis of embodiment as shown in Figure 1, step S103 may be used also
With including following sub-step：
S601, the temperature of each thermistor is obtained according to the pressure drop of each thermistor.
For example, after the pressure drop of each thermistor is got, each thermistor pair can be calculated according to Ohm's law
The resistance answered, pre-sets the resistance of thermistor and the mapping relations of temperature in the plug-in of vehicle, it is determined that each
After the resistance of thermistor, it is possible to inquire about above-mentioned mapping relations, the temperature of each thermistor is therefrom determined.
S602, obtains the temperature difference of thermistor between any two.
As a kind of example, referring to Fig. 1, mark thermistor A temperature is TA, thermistor B temperature be TB, and
Thermistor C temperature is TC, then the temperature difference of thermistor between any two be respectively | TA-TB|、|TA-TC|, and | TB-TC
|。
S603, judges whether all temperature differences are all higher than temperature difference threshold value, if so, performing S604, otherwise, performs
S606。
In an embodiment of the present invention, temperature difference threshold value can be set in advance in the plug-in of vehicle, mark temperature
Poor threshold value is Δ T.
In the course of the work, stator winding internal temperature field is evenly distributed motor, under normal condition, and thermistor is anti-
The temperature information of feedback should be basically identical, relatively large deviation should not occurs, therefore, under normal condition, | TA-TB|、|TA-TC|, and |
TB-TC| Δ T all should be less than or equal to.
S604, judges whether lasting preset duration, if so, performing S605, otherwise, performs S606.
It should be noted that in the starting stage of electric machine controller after the power-up, internal supply voltage is unstable, therefore need
Be delayed preset duration, after power good to be powered, then be driven motor temperature verification fault detect, can be prevented effectively from by
The fault misdescription caused by system interference.
Alternatively, when all temperature differences are all higher than temperature difference threshold value and continue preset duration, determine at motor
In temperature checking malfunction；When all temperature differences are all higher than temperature difference threshold value and do not continue preset duration, end processing
Flow.
S605, determines that motor is in temperature checking malfunction.
It should be noted that when motor is in temperature detection malfunction and voltage acquisition as shown in Figure 4 and Figure 5
During loop fault state, it is impossible to obtain the effective temperature of motor, therefore step S601~S605 shown in Fig. 6 need not be performed
Handling process, be not in temperature detection malfunction and voltage acquisition circuit failure as shown in Figure 4 and Figure 5 in motor
During state, the handling process of the temperature checking fault condition detection shown in Fig. 6 is performed.
S606, terminates.
The motor detection method of the present embodiment, by being all higher than temperature difference threshold value in all temperature differences and continuing pre-
If during duration, determining that motor is in temperature checking malfunction, being all higher than temperature difference threshold value in all temperature differences and hold
During continuous preset duration, determine that motor is in temperature checking malfunction, can be prevented effectively from due to caused by system interference
Fault misdescription.
For clear explanation above-described embodiment, referring to Fig. 7, on the basis of such as Fig. 1~embodiment illustrated in fig. 6, work as detection
Go out motor to be in after any malfunction, it is further comprising the steps of：
The thermistor of malfunction is in S701, statistics motor.
Alternatively, when it is determined that motor is in malfunction, the temperature-sensitive of malfunction is in statistics motor
Resistance, the number of thermistor of the mark in malfunction is M.
S702, judges whether all thermistors are in malfunction, if so, performing S703, otherwise, performs
S706。
S703, judges whether the cooling system of vehicle is in malfunction, if so, performing S704, otherwise, performs S705.
Alternatively, when all thermistors are in malfunction, i.e. during M=N, judging the cooling system of vehicle is
It is no to be in malfunction.
S704, the torque of adjustment motor is in security restriction.
Alternatively, it is in malfunction in all thermistors, and cooling system, when being in malfunction, adjustment is driven
The torque of dynamic motor is in security restriction, specifically, can be by lighting the form pair of instrument fault lamp and alarm sound of blowing a whistle
Driver is pointed out, and it is recognized that drive system breaks down, while the subsequent treatment to the failure produces psychological preparation,
It can be delayed the regular hour on this basis, leave driver for and carry out psychological preparation, then, turning for motor can be adjusted
Square is in security restriction, prevents motor from occurring the situation of excess temperature.
S705, control cooling system is radiated according to maximum heat dissipation capacity.
Alternatively, it is in malfunction in all thermistors, and cooling system is when being not in malfunction, control
Cooling system is radiated according to maximum heat dissipation capacity, the situation that motor can be avoided to overheat, it is ensured that the safety of driving,
At this point it is possible to be pointed out by lighting instrument alarm lamp driver.
S706, judges whether be not in malfunction in all thermistors, if so, performing S708, otherwise, performs
S707。
Alternatively, if be not in malfunction, i.e. M=0 in all thermistors, then handling process is terminated；
The number that thermistor is in malfunction is 0<M<During N, because in this state, thermistor can continue to obtain driving
The temperature of motor, motor overheat protector mechanism is remained able to realize, therefore the normal control of motor will not be impacted,
At this point it is possible to carry out fault alarm processing, for example, it can be reminded and driven by way of lighting instrument fault lamp and the short ring of alarm sound
The person of sailing.
S707, carries out fault alarm processing.
Alternatively, when having at least one to be not in malfunction in all thermistors, fault alarm processing is carried out,
For example, driver can be reminded by way of lighting instrument fault lamp and the short ring of alarm sound.
S708, terminates.
The motor detection method of the present embodiment, by being in malfunction, and cooling in all thermistors
When system is in malfunction, the torque of adjustment motor is in security restriction, can prevent motor from occurring excess temperature
Situation, the safety of effective guarantee driving.By being in malfunction in all thermistors, and cooling system is not in event
During barrier state, control cooling system is radiated according to maximum heat dissipation capacity, and the situation that motor can be avoided to overheat is protected
Demonstrate,prove the safety of driving.When being not in malfunction by there is at least one in all thermistors, carry out at fault alarm
Reason, can effectively lift the riding experience of user.
Fig. 8 is a kind of structural representation of motor detection means provided in an embodiment of the present invention.The motor is examined
Surveying device 800 being implemented in combination with by software, hardware or both.
As shown in figure 8, the motor detection means 800 includes：Acquisition module 810, selection module 820, and determine
Module 830.Wherein,
Acquisition module 810, the pressure drop for gathering thermistor on motor using default voltage collection circuit.
Module 820 is chosen, is examined for gradually choosing an inspection policies from default all inspection policies as target
Survey strategy；Wherein, the different inspection policies of different types of fault detect correspondence.
Determining module 830, for according to pressure drop and target detection strategy, determining the corresponding target type of target detection strategy
Lower motor state in which；Wherein state includes malfunction and normal condition.
Further, in a kind of possible implementation of the embodiment of the present invention, on the basis of Fig. 8, referring to Fig. 9,
The motor detection means 800 is still further comprised：
Setup module 840, for being provided with multiple thermistors according to default be spaced on motor.
Statistical module 850, for when it is determined that motor is in malfunction, failure shape to be in statistics motor
The thermistor of state.
Judge module 860, for when all thermistors are in malfunction, judging the cooling system of vehicle to be
It is no to be in malfunction.
Processing module 870, for when cooling system is in malfunction, the torque of adjustment motor to be in safety and limited
System；When cooling system is not in malfunction, control cooling system is radiated according to maximum heat dissipation capacity.
Alarm module 880, during for there is at least one to be not in malfunction in all thermistors, carries out failure
Alert process.
Optionally it is determined that module 830 specifically for：Judge whether pressure drop is in first voltage threshold value and second voltage threshold value
It is interior；If pressure drop is not in first voltage threshold value and second voltage threshold value and maintains preset duration, it is determined that at motor
In temperature detection malfunction.
Optionally it is determined that module 830 is additionally operable to：The resistance of thermistor is obtained according to pressure drop；Temperature-sensitive is determined according to resistance
The Current Temperatures of resistance；Judge Current Temperatures whether in the first temperature threshold and second temperature threshold value；If Current Temperatures
It is not in the first temperature threshold and second temperature threshold value and maintains preset duration, it is determined that motor is in temperature detection event
Barrier state.
Optionally it is determined that module 830 is additionally operable to：Judge whether pressure drop is in tertiary voltage threshold value and the 4th voltage threshold
It is interior；If pressure drop is not in tertiary voltage threshold value and the 4th voltage threshold and maintains preset duration, it is determined that at motor
In voltage acquisition circuit malfunction.
Optionally it is determined that module 830 is additionally operable to：The temperature of each thermistor is obtained according to the pressure drop of each thermistor
Degree；Obtain the temperature difference of thermistor between any two；Whether temperature difference threshold value is all higher than according to all temperature differences；If all
Temperature difference be all higher than temperature difference threshold value and lasting preset duration, it is determined that motor be in temperature checking malfunction.
It should be noted that explanation of the earlier figures 1- Fig. 7 embodiments to motor detection method embodiment is also fitted
For the motor detection means 800 of the embodiment, here is omitted.
The motor detection means of the present embodiment, heat on motor is gathered by using default voltage collection circuit
The pressure drop of quick resistance, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；Wherein,
The different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection strategy
Motor state in which under corresponding target type.In the present embodiment, only thermistor need to be set on motor, tied
The pressure drop and inspection policies for closing thermistor can just complete the fault detect to motor, so as to improve driving peace
Entirely.
In order to realize above-described embodiment, the present invention also proposes a kind of motor detection means, including：Processor and storage
Device；Wherein, the processor is run by reading the executable program code stored in the memory can perform with described
The corresponding program of program code, for realizing motor detection method as in the foregoing embodiment.
The motor detection means of the present embodiment, heat on motor is gathered by using default voltage collection circuit
The pressure drop of quick resistance, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；Wherein,
The different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine target detection strategy
Motor state in which under corresponding target type.In the present embodiment, only thermistor need to be set on motor, tied
The pressure drop and inspection policies for closing thermistor can just complete the fault detect to motor, so as to improve driving peace
Entirely.
In order to realize above-described embodiment, the present invention also proposes a kind of computer program product, when computer program production
Instruction in product by computing device when, perform the motor detection method that the above embodiment of the present invention is proposed.
The computer program product of the present embodiment, temperature-sensitive on motor is gathered by using default voltage collection circuit
The pressure drop of resistance, gradually chooses an inspection policies from default all inspection policies and is used as target detection strategy；Wherein, no
The corresponding different inspection policies of the fault detect of same type, according to pressure drop and target detection strategy, determine target detection strategy pair
Motor state in which under the target type answered.In the present embodiment, only thermistor need to be set on motor, with reference to
The pressure drop of thermistor and inspection policies can just complete the fault detect to motor, so as to improve traffic safety.
In order to realize above-described embodiment, the present invention also proposes a kind of non-transitorycomputer readable storage medium, deposited thereon
Contain computer program, it is characterised in that drive as in the foregoing embodiment is realized when the computer program is executed by processor
Dynamic electric machines test method.
The non-transitorycomputer readable storage medium of the present embodiment, gathers by using default voltage collection circuit and drives
The pressure drop of thermistor on dynamic motor, gradually chooses an inspection policies from default all inspection policies and is used as target detection
Strategy；Wherein, the different inspection policies of different types of fault detect correspondence, according to pressure drop and target detection strategy, determine mesh
Mark motor state in which under the corresponding target type of inspection policies.In the present embodiment, it need to only be set on motor
Thermistor, pressure drop and inspection policies with reference to thermistor can just complete the fault detect to motor, so as to
Improve traffic safety.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.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 not be the same as Example or the feature of example and non-be the same as Example 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 indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express 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 described otherwise above or method description are construed as in flow chart or herein, represent to include
Module, fragment or the portion of the code of one or more executable instructions for the step of realizing custom logic function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion 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.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered use
In the order list for the executable instruction for realizing logic function, it 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 for combining these instruction execution systems, device or equipment and using
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wirings
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.In addition, computer-readable medium, which can even is that, to print the paper or other suitable media of described program thereon, because
Can then to enter edlin, interpretation or suitable with other if necessary for example by carrying out optical scanner to paper or other media
Mode is handled electronically to obtain described 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, the software that multiple steps or method can in memory and by suitable instruction execution system be performed 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
Scattered logic circuit, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can be compiled
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 is carried
Rapid to can be by program to instruct the hardware of correlation to complete, described program can be stored in a kind of computer-readable storage medium
In matter, 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 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, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is realized using in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although having been shown and retouching 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 (19)
1. a kind of motor detection method, it is characterised in that including：
The pressure drop of thermistor on motor is gathered using default voltage collection circuit；
An inspection policies are gradually chosen from default all inspection policies and are used as target detection strategy；Wherein, different type
The different inspection policies of fault detect correspondence；
According to the pressure drop and the target detection strategy, the drive under the corresponding target type of the target detection strategy is determined
Dynamic motor state in which；Wherein state includes malfunction and normal condition.
2. motor detection method according to claim 1, it is characterised in that described according to the pressure drop and the mesh
Inspection policies are marked, the motor state in which under the corresponding target type of the target detection strategy is determined, including：
Judge the pressure drop whether in first voltage threshold value and second voltage threshold value；
If the pressure drop is not in the first voltage threshold value and the second voltage threshold value and maintains preset duration, really
The fixed motor is in temperature detection malfunction.
3. motor detection method according to claim 1, it is characterised in that described according to the pressure drop and the mesh
Inspection policies are marked, the motor state in which under the corresponding target type of the target detection strategy is determined, including：
The resistance of the thermistor is obtained according to the pressure drop；
The Current Temperatures of the thermistor are determined according to the resistance；
Judge Current Temperatures whether in the first temperature threshold and second temperature threshold value；
If Current Temperatures are not in first temperature threshold and the second temperature threshold value and maintain preset duration, really
The fixed motor is in temperature detection malfunction.
4. motor detection method according to claim 1 or 2, it is characterised in that described according to the pressure drop and institute
Target detection strategy is stated, the motor state in which under the corresponding target type of the target detection strategy is determined, wrapped
Include：
Judge the pressure drop whether in tertiary voltage threshold value and the 4th voltage threshold；
If the pressure drop is not in the tertiary voltage threshold value and the 4th voltage threshold and maintains preset duration, really
The fixed motor is in voltage acquisition circuit malfunction.
5. the motor detection method according to claim any one of 1-4, it is characterised in that also include：
Default be spaced on the motor is provided with multiple thermistors.
6. motor detection method according to claim 5, it is characterised in that described according to the pressure drop and the mesh
Inspection policies are marked, the motor state in which under the corresponding target type of the target detection strategy is determined, including：
The temperature of each thermistor is obtained according to the pressure drop of each thermistor；
Obtain the temperature difference of thermistor between any two；
Whether temperature difference threshold value is all higher than according to all temperature differences；
The temperature difference threshold value and lasting preset duration are all higher than if all of temperature difference, it is determined that the motor is in
Temperature checking malfunction.
7. motor detection method according to claim 6, it is characterised in that also include：
When it is determined that the motor is in malfunction, the temperature-sensitive that malfunction is in the motor is counted
Resistance；
Malfunction is in if all of thermistor, then judges whether the cooling system of vehicle is in malfunction；
When the cooling system is in malfunction, the torque for adjusting the motor is in security restriction；
When the cooling system is not in malfunction, the cooling system is controlled to be radiated according to maximum heat dissipation capacity.
8. motor detection method according to claim 7, it is characterised in that also include：
If all of there is at least one to be not in malfunction in thermistor, then fault alarm processing is carried out.
9. a kind of motor detection means, it is characterised in that including：
Acquisition module, the pressure drop for gathering thermistor on motor using default voltage collection circuit；
Module is chosen, target detection strategy is used as gradually choosing an inspection policies from default all inspection policies；
Wherein, the different inspection policies of different types of fault detect correspondence；
Determining module, for according to the pressure drop and the target detection strategy, determining the corresponding mesh of the target detection strategy
Mark the motor state in which under type；Wherein state includes malfunction and normal condition.
10. motor detection means according to claim 9, it is characterised in that the determining module specifically for：Sentence
Whether the pressure drop of breaking is in first voltage threshold value and second voltage threshold value；If the pressure drop is not in the first voltage
In threshold value and the second voltage threshold value and maintain preset duration, it is determined that the motor is in temperature detection failure shape
State.
11. motor detection means according to claim 9, it is characterised in that the determining module is additionally operable to：According to
The pressure drop obtains the resistance of the thermistor；The Current Temperatures of the thermistor are determined according to the resistance；Judge to work as
Whether preceding temperature is in the first temperature threshold and second temperature threshold value；If Current Temperatures are not in first temperature threshold
With in the second temperature threshold value and maintain preset duration, it is determined that the motor be in temperature detection malfunction.
12. the motor detection means according to claim 9 or 10, it is characterised in that the determining module is additionally operable to：
Judge the pressure drop whether in tertiary voltage threshold value and the 4th voltage threshold；If the pressure drop is not in the 3rd electricity
Press in threshold value and the 4th voltage threshold and maintain preset duration, it is determined that the motor is in voltage acquisition circuit event
Barrier state.
13. the motor detection means according to claim any one of 9-12, it is characterised in that also include：
Setup module, for being provided with multiple thermistors according to default be spaced on the motor.
14. motor detection means according to claim 13, it is characterised in that the determining module is additionally operable to：Root
The temperature of each thermistor is obtained according to the pressure drop of each thermistor；Obtain the temperature difference of thermistor between any two；
Whether temperature difference threshold value is all higher than according to all temperature differences；The temperature difference threshold value is all higher than if all of temperature difference and is held
Continuous preset duration, it is determined that the motor is in temperature checking malfunction.
15. motor detection means according to claim 14, it is characterised in that also include：
Statistical module, for when it is determined that the motor is in malfunction, counting and failure being in the motor
The thermistor of state；
Judge module, for when all thermistors are in malfunction, judging whether the cooling system of vehicle is in
Malfunction；
Processing module, for when the cooling system is in malfunction, the torque for adjusting the motor to be in safety
Limitation；When the cooling system is not in malfunction, the cooling system is controlled to be radiated according to maximum heat dissipation capacity.
16. motor detection means according to claim 15, it is characterised in that also include：
Alarm module, during for there is at least one to be not in malfunction in all thermistors, is carried out at fault alarm
Reason.
17. a kind of motor detection means, it is characterised in that including processor and memory；
Wherein, the processor is run by reading the executable program code stored in the memory can perform with described
The corresponding program of program code, for realizing the motor detection method as described in any in claim 1-8.
18. a kind of computer program product, when the instruction in the computer program product is by computing device, is performed as weighed
Profit requires the motor detection method any one of 1-8.
19. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the calculating
The motor detection method as any one of claim 1-8 is realized when machine program is executed by processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710446116.1A CN107121637A (en) | 2017-06-14 | 2017-06-14 | Motor detection method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710446116.1A CN107121637A (en) | 2017-06-14 | 2017-06-14 | Motor detection method and device |
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| CN107121637A true CN107121637A (en) | 2017-09-01 |
Family
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| WO2024051370A1 (en) * | 2022-09-09 | 2024-03-14 | 蔚来动力科技(合肥)有限公司 | Aging detection method, aging detection device, and computer readable storage medium |
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