CN102236353A - Self-diagnosis system and method of electric vehicle controller - Google Patents
Self-diagnosis system and method of electric vehicle controller Download PDFInfo
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- CN102236353A CN102236353A CN2010101545642A CN201010154564A CN102236353A CN 102236353 A CN102236353 A CN 102236353A CN 2010101545642 A CN2010101545642 A CN 2010101545642A CN 201010154564 A CN201010154564 A CN 201010154564A CN 102236353 A CN102236353 A CN 102236353A
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Abstract
The invention discloses a self-diagnosis system and method of an electric vehicle controller. The self-diagnosis system of the electric vehicle controller disclosed by the invention comprises detection modules, control modules and display modules, wherein the detection modules are connected with each key component of an electric vehicle so as to detect the key components; the control modules are connected with the detection modules; the display modules are connected with the control modules; the control modules obtain the detection signals of each detection module and determine whether an electric vehicle control system has faults or not according to the detection signals; and the display modules display the results. The self-diagnosis system and method disclosed by the invention can be used for detecting the operating state of each key component of the electric vehicle control system and displaying the operating state; maintenance personnel can find out the fault source easily and eliminate the faults according to the corresponding relation table between the display states and the fault reasons which probably exist.
Description
Technical field
The application relates to the vehicle technology field, particularly relates to controller for electric vehicle self-diagnosable system and method.
Background technology
The function of controller for electric vehicle mainly be the control electric motor car startup, stop, advancing, retreat, operation such as speed, make vehicle have a kind of efficient, steadily, start strong, acceleration performance good and easy to use, its range of application is wider, can be applied to electrocar, golf cart, vista car, battery-operated motor cycle, electri forklift, electric ship etc. and use the transport facility of electric energy as power.Do not have self-diagnosable system in traditional controller for electric vehicle, need relatively for the maintenance of electric vehicle controller or maintenance that the personnel of specialty come the failure judgement source, wasting manpower and material resources not only, and also the time of cost is longer.
By research to prior art, the inventor finds: do not have self-diagnosable system in the controller for electric vehicle of the prior art, when controller is maintained or keeps in repair, need the professional to come the failure judgement source like this, both the time of wasting manpower and material resources and cost was long.
Summary of the invention
The application's technical matters to be solved is, a kind of controller for electric vehicle self-diagnosable system and method are provided, and to realize judging rapidly the source of trouble, technical scheme is as follows:
The embodiment of the present application provides a kind of electric motor car self-diagnosable system, and this system comprises:
The detection module that links to each other and detect with each critical component of electric motor car with to described critical component;
The control module that connects described detection module;
The display module that links to each other with described control module;
Wherein:
Described control module is obtained the detection signal of above-mentioned each detection module, determines according to this detection signal whether electric vehicle control system exists fault, by described display module display result.
Preferably, in the said system, described detection module comprises: controller temperature detecting module, motor detection module, accelerator detection module, supply voltage detection module, main contactor detection module and directional contactor detection module.
Preferably, in the said system, described motor detection module comprises:
Electric moter voltage detection module that is connected with described control module and/or motor temperature detection module;
Preferably, in the said system, described accelerator detection module comprises:
Microswitch detection module that is connected with described control module and/or accelerator output voltage detection module.
Preferably, in the said system, described main contactor detection module comprises:
Main contactor contact detection module that is connected with described control module and main contactor coil detection module.
Preferably, in the said system, described directional contactor detection module comprises:
Directional contactor contact detection module that is connected with described control module and directional contactor coil detection module.
Preferably, in the said system, the composition module of described each detection module comprises:
Obtain submodule, be used to obtain the detection signal of electric motor car critical component;
Comparison sub-module is relatively obtained detection signal and this detection signal corresponding preset value that submodule obtains, and comparative result is delivered to control module.
The embodiment of the present application also provides a kind of electric motor car self-diagnosing method, and described electric motor car is provided with the detection module that detects its critical component, comprising:
Obtain the detection signal of each detection module;
Determine according to the detection signal that gets access to whether electric vehicle control system exists fault, and the output result.
Preferably, in the said method, determine according to the detection signal that gets access to whether electric vehicle control system exists fault to comprise:
The detected signal value of described a certain detected parts and the detected parameter corresponding preset value of these detected parts are compared, obtain comparative result;
Judge according to described comparative result whether these detected parts exist fault.
Preferably, in the said method, the detection module of described critical component comprises:
Controller temperature detecting module, motor detection module, accelerator detection module, supply voltage detection module, main contactor detection module and directional contactor detection module.
The technical scheme that provides by above the embodiment of the present application as seen, each detection module detects each main building block of electric vehicle control system, control module failure judgement source and by display module output result.This self-diagnosable system and method can detect the running status of each critical component of electric vehicle control system, and show described running status, the maintenance personal can be according to the mapping table between show state and the failure cause that may exist, and is easy to find the source of trouble and then fixes a breakdown.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of controller for electric vehicle self-diagnosable system of the embodiment of the present application;
Fig. 2 is the structural representation of the another kind of controller for electric vehicle self-diagnosable system of the embodiment of the present application;
Fig. 3 a is the structural representation of the embodiment of the present application controller temperature detecting module;
Fig. 3 b is the structural representation of the embodiment of the present application electric moter voltage detection module;
Fig. 3 c is the structural representation of the embodiment of the present application motor temperature detection module;
Fig. 3 d is the structural representation of the embodiment of the present application accelerator voltage detection module;
Fig. 3 e is the structural representation of the embodiment of the present application microswitch detection module;
Fig. 4 is the structural representation of the embodiment of the present application contact detection module;
Fig. 5 is the structural representation of the embodiment of the present application coil detection module;
Fig. 6 is the process flow diagram of the embodiment of the present application controller for electric vehicle self-diagnosing method.
Embodiment
At first the electric motor car self-diagnosable system to the embodiment of the present application describes, and this system comprises: the detection module that links to each other and detect with to described critical component with each critical component of electric motor car; The control module that is connected with detection module; The display module that links to each other with control module;
The roughly workflow of this self-diagnosable system is: by each detection module to the detection of taking a sample of the partial parameters of each element of control assembly, and a detection signal that obtains is delivered in the control module, control module is controlled the demonstration situation of display module according to the detection signal that receives.People just can be easy to judge the source of trouble according to the demonstration of display module, and the maintenance personal contrasts mapping table between reveal codes and failure cause that may exist and the solution and can know the source of trouble very like a cork and keep in repair.
Wherein, described detection module can comprise: controller temperature detecting module, motor detection module, accelerator detection module, supply voltage detection module, main contactor detection module and directional contactor detection module.
When carrying out the electric vehicle control system fault detect, at first closed key switch, the show state of the display module of observation controller front, display module can be realized by LED light, it is working properly to preset pilot lamp list sudden strain of a muscle expression controller, and can carry out next step inspection this moment.
Reversing switch is pulled the retaining that marches forward, accelerator is quickened, should be able to hear the sound of main contactor, directional contactor adhesive.
Continue slowly to quicken, the rotating speed of motor or wheel will increase.
Accelerator resets, and simultaneously reversing switch is pulled to the retaining that falls back, and slowly quickens again, and motor or wheel should reverse.
The accelerator 90s rear motor that resets should not rerun, and should be able to hear the sound that main contactor discharges, and steps on accelerator again or rotates the sound that the accelerator swivel arm should be able to be heard the main contactor adhesive.
More than be the step when carrying out Preliminary detection, introduce each ingredient and the course of work thereof of electric motor car self-diagnosable system below in conjunction with accompanying drawing in detail.
Referring to shown in Figure 1, a kind of structural representation of controller for electric vehicle self-diagnosable system, mainly comprise: control module 101, the controller temperature detecting module 102, motor detection module 103, accelerator detection module 104, supply voltage detection module 105, main contactor detection module 106, the directional contactor 107 that are connected with described control module 101; Described control module 101 also connects display module 108;
Described controller module 101 can be a single-chip microcomputer, is used to receive the detected signal value of above-mentioned each detection module, determines according to this detected signal value whether electric vehicle control system exists fault, and controls the show state of described display module.
Controller temperature detecting module 102, temperature value that specifically can be by the temperature sensor acquisition controller, and then compare with preset value, if it is overheated to exceed the range specification controller of fiducial value.
Motor detection module 103 can detect the temperature of motor output end voltage and motor, and compare with electric moter voltage preset value and motor temperature preset value respectively, and the comparative result that obtains is delivered in the control module 101.Described electric moter voltage preset value can for motor output rated voltage value ± 15%, if motor output end voltage not in above-mentioned scope, M-output fault then; The motor temperature preset value can be 135 ℃, when the motor temperature detected value is higher than motor temperature preset value, then motor overheating.
Accelerator detection module 104, the voltage at output end voltage by detecting accelerator and the microswitch two ends that are connected with accelerator circuit can detect the state of accelerator.If it is that microswitch is in closure state that accelerator is in reset mode, when the signal for faster input was also promptly arranged, the voltage at microswitch two ends should be 0V, was not 0V, then microswitch fault if detect the magnitude of voltage at microswitch two ends this moment; If the accelerator output end voltage has surpassed the voltage range of its input end, then the signal for faster input fault is that accelerator exists fault.
Supply voltage detection module 105, detecting power supply is the voltage of accumulator, if detected supply voltage value not accumulator rated output voltage value ± 15% scope in, the overpressure protection fault of then powering.
Main contactor detection module 106, the magnitude of voltage at the coil two ends by voltage between the contact of detecting main contactor and/or contactor is determined the state of main contactor.If key switch is in the driving loop that not closed state is the access failure main contactor, the voltage that detects between the quiet device of main contact contact is 0V, the then stationary contact adhesion of main contactor; If key switch is closed and when signal for faster was arranged, the voltage that detects the coil two ends of main contactor was 0V, then main contactor driving circuit fault;
Directional contactor detection module 107, similar with main contactor detection module 106, by the magnitude of voltage between the stationary contact of measuring directional contactor and/or the magnitude of voltage at directional contactor coil two ends, determine the state of directional contactor.
Control module 101 according to the detection signal of above-mentioned each detection module that receives, is determined the source of trouble, and controls the show state of display module according to the corresponding relation between the display mode of failure cause and display module 108.
Display module 108, the flicker number of times by pilot lamp shows the failure cause that may exist.Concrete display module can be LED (Light Emitting Diode, light emitting diode) pilot lamp, can show the fault that may exist with the flicker combination of two codes, for example, LED light flicker code is " 2; 4 " the time, the flashing mode that is LED light is that 2 flicker backs approximately have 4 flickers again behind the 0.7s at interval, promptly once completely be shown as 2 flickers and add 4 flickers, wherein 2 flickers or the time interval between 4 times approximately can be 0.13s, approximately carry out next cycle flicker behind the 3s at interval after each complete flicker, be excluded until fault.Corresponding relation between LED light flicker code and failure cause is as shown in table 1:
Table 1
| LED generation | The source of trouble | The possible failure cause and the operation of fixing a breakdown |
| Sign indicating number | ||
| LED does not work | Non-transformer | 1, power supply access failure checks whether primary power has correctly reliably been received on the controller system; Whether main insurance, control circuit ensure and open a way; Whether controller terminals " P12 " have supply voltage.2, not working under all normal situation of all wiring, power supply, then is that controller damages. |
| LED Chang Liang | Controller failure | 1, controller damages. |
| LED is single to be dodged | Working properly | 1, the single sudden strain of a muscle 4 seconds interval times. |
| 1,2 | Controller is overheated | 1, temperature is higher than 85 degree Celsius in the controller.2, vehicle continues overload operation.3, the position of controller installation is improper, and ventilation effect is bad.4, under hot environment, use.5, the controller option is selected improperly, please select more high-power controller for use. |
| 1,3 | Motor overheating | 1, the temperature in the motor is higher than 135 degree Celsius.2, vehicle continues overload operation.3, under exceedingly odious environment, move.4, the vehicular electric machine selection is improper, please select more heavy-duty motor.5, whether motor temperature sensor fault or wiring error, surveying control line terminals " P1 " during the motor cold conditions has noble potential (time identical with battery tension). |
| 1,4 | The sequence of operation mistake | 1, sequence of operation mistake is quickened to remove fault after the device pedal resets as long as will speed up again.2, accelerator fault, accelerator output signal voltage when reset mode surpasses 1.5V.(normal value is less than 0.8V) |
| 2,1 | Accelerator microswitch fault | When 1, accelerator resetted, controller control end interface P3 had noble potential (identical with supply voltage) microswitch contact adhesion. |
| 2,2 | M-exports fault | 1, M-output is to the B-short circuit.2, accelerator position detection line open circuit, controller control terminals " P3 " should have noble potential when accelerator pedal was stepped on.3, motor output overloading or short circuit |
| 2,3 | The adhesion of main contactor contact | 1, measuring two ends, main contactor contact resistance value before not closed key switch, is 0 Ω as resistance value, then is the contact adhesion, pulls down and reinstalls the replacing contactor of well damage after the contacts of contactor end cap polishes the contact that burns out with fine sandpaper. |
| When 2, this fault taking place, controller will turn-off output, report to the police 15 seconds.As continuing to use vehicle this moment is unsafe. | ||
| 2,4 | The power supply overpressure protection | 1, battery tension exceeds the voltage usable range of controller.2, battery tension should not exceed 125% of controller operating voltage. |
| 3,1 | The contactor drive circuit fault | 1, driving circuit overcurrent, the contactor drive circuit maximum current that allows to work long hours is 2A, and overcurrent protection is 3A.(when) 2, the short circuit of contactor solenoid.3, the diode that is connected in parallel on the contactor solenoid connects instead.4, contactor solenoid working current is excessive. |
| 3,2 | The main contactor fault | 1, contacts of contactor loose contact: can hear main contactor adhesive sound when accelerator pedal is stepped on, the metering contact both end voltage is non-vanishing, is contact fault, pulls down the main contactor end cap and checks the contact, the contact is polished with fine sandpaper as the contact injustice, just clean out if any rubbish; As well damage, that can not repair just changes.3, contactor coil is not worked, and can't hear the adhesive sound of main contactor when accelerator pedal is stepped on, and generally is contactor solenoid open circuit. |
| 3,3 | The directional contactor fault | 1, this fault is used for testing of electric motors, directional contactor circuit, and accelerator pedal must be stepped on could display result after 60 seconds.2, directional contactor poor contact of contacts is switched reversing switch and can be heard the contactor adhesive sound that advances, falls back.When vehicle advanced, falls back operation, a direction operation was normal, and another direction can not be moved, then the contacts of contactor that can not move has fault, pull down the contactor top cover and check the contact, with fine sandpaper the contact is polished, have rubbish just to clean out in this way as the contact injustice; Well damage, that can not repair just changes.3, switching reversing switch and can't hear directional contactor adhesive sound, generally is contactor solenoid open circuit.4, motor open circuit switches reversing switch and can hear directional contactor adhesive sound, and forward-reverse all can not be worked, and checks that whether correct the line of motor is, firm good, and whether the motor carbon contact is good. |
| 3,4 | Reserve | |
| 4,1 | The signal for faster input fault | 1, the accelerator output voltage has surpassed controller signal for faster input voltage range.2, accelerator wiring error.3, accelerator damages.4, the bad or open circuit of accelerator power supply negative wire contact. |
| 4,2 | Preliminary filling | 1, M-output is to the B-short circuit. |
| The electricity failure | 2, the outlet of motor is to the B-short circuit.3, controller internal short-circuit. | |
| 4,3 | Controller failure | 1, controller failure |
The controller for electric vehicle self-diagnosable system that the embodiment of the present application provides detects by each detection module each main building block to electric vehicle control system, control module failure judgement source and by display module output result.This self-diagnosable system can detect the running status of each critical piece of electric vehicle control system, and the running status that shows electric vehicle control system by display module, the maintenance personal can be according to the corresponding relation between the show state of display module and the failure cause that may exist, and is easy to find fault former and then fix a breakdown.
Referring to Fig. 2, the application's optimum embodiment also comprises precharge detection module 109, is used for detecting the charged state to controller electric capacity, because the capacitance in the controller is bigger, before connecting main circuit, carry out pre-charge process for described electric capacity, the voltage at electric capacity two ends is slowly risen, in case when connecting main circuit, the voltage instantaneous at electric capacity two ends is increased to supply voltage, and charging current is excessive, causes burning out electric capacity.Magnitude of voltage between the negative pole end that detects precharge line end on the controller and battery, if detect this magnitude of voltage is 0V, then precharge failure, precharge in the reason table 1 that may the exist pairing failure cause in a hurdle of failing, in the above-mentioned table 1, the B-end is the negative pole end of accumulator, and the M-end is the field copper end of motor.
Motor detection module 103 comprises electric moter voltage detection module 1031 that detects the motor output end magnitude of voltage and the motor temperature detection module 1032 that is used to detect motor temperature.
During concrete enforcement, electric moter voltage can not exceed 85%～115% scope of motor rated voltage, exceeds above-mentioned scope if detect motor output end voltage, then the i.e. M-output fault in the table 1 of motor output fault; Motor temperature can if the temperature of winding is higher than 135 ℃, then illustrate motor overheating by the temperature of winding in the temperature sensor measurement motor.
Accelerator detection module 104 comprises accelerator voltage detection module 1041 and microswitch detection module 1042, wherein:
Described accelerator voltage detection module 1041 detects the accelerator output end voltage, if the accelerator output end voltage has surpassed controller signal for faster input voltage range, then is accelerator signal input fault and accelerator fault.When key switch closure and microswitch closure, described microswitch detection module 1042 detects the magnitude of voltage at microswitch two ends, under the prerequisite of key switch closure, when accelerator is in reset mode is that microswitch is in off-state, the magnitude of voltage that microswitch detection module 1042 detects the microswitch two ends should be 0V, if the magnitude of voltage that detects the microswitch two ends this moment is for 0V is not identical with supply voltage, then there is fault in microswitch, i.e. the contact adhesion of microswitch.
Main contactor detection module 106 comprises main contactor contact detection module 1061 and main contactor coil detection module 1062, wherein:
Voltage between the stationary contact of described main contactor contact detection module 1061 detection main contactors.When the main contactor adhesive, the voltage that detects between the main contactor stationary contact that obtains should be 0V; At this moment, if detect voltage between the main contactor stationary contact for 0V, main contactor fault and be the contact fault of main contactor then; When main contactor separated, the voltage that detects between the main contactor stationary contact that obtains should be supply voltage, at this moment, if the voltage that detects between the main contactor stationary contact is 0V, then main contactor contact adhesion.
Described main contactor coil detection module 1062, the voltage at the coil two ends of detection main contactor.When key switch closure and accelerator were in acceleration mode, the main contactor coil electricity should be supply voltage so detect the magnitude of voltage that obtains these coil two ends, at this moment, if the voltage at detected these coil two ends is 0V, main contactor driving circuit fault then;
Directional contactor detection module 107 and main contactor detection module 106 are similar, comprise directional contactor contact detection module 1071 and directional contactor coil detection module 1072, because directional contactor comprises the advance contactor and the contactor that falls back, so described directional contactor contact detection module 1071 comprises advance the contacts of contactor detection module 1071a and the contacts of contactor detection module 1071b that falls back; Directional contactor coil detection module 1072 comprises advance the contactor coil detection module 1072a and the contactor coil detection module 1072b that falls back; Wherein:
The contacts of contactor detection module 1071a that advances detects the voltage between the stationary contact of the contactor that advances.When reversing switch is pulled when retaining of marching forward, under the prerequisite of key switch closure, the voltage between the stationary contact of the contactor that advances should be 0V, at this moment, if detect voltage between this stationary contact for 0V, directional contactor fault and be the contact fault of contactor of advancing then; In like manner,, reversing switch is not 0V, then directional contactor fault and for falling back the contacts of contactor fault if pulling the voltage that falls back between the contactor stationary contact to falling back when retaining, detecting;
The contactor coil detection module 1072a that advances detects the voltage at the coil two ends of the contactor that advances.When reversing switch is pulled when retaining of marching forward, same under the prerequisite of key switch closure, the contactor coil that advances energising, at this moment, the voltage at contactor coil two ends of advancing should be supply voltage, if detecting the voltage at the contactor coil two ends of advancing is 0V, directional contactor fault and be the contactor drive circuit fault of advancing then; In like manner, pull to falling back when retaining when reversing switch, the voltage that detects the contactor coil two ends of falling back is 0V, then directional contactor fault and be the contactor drive circuit fault that falls back.
Above-mentioned detection module detects the source of trouble that may exist, and the possible failure cause of its correspondence sees also the possible failure cause in the table 1 and gets rid of particular content in the hurdle, introduces no longer in detail herein.
Preferably, each above-mentioned detection module includes and obtains submodule and comparison sub-module in the embodiment of the present application, specifies the concrete course of work of obtaining submodule and judging submodule below in conjunction with Fig. 3 a-Fig. 3 e:
Shown in Fig. 3 a, controller temperature detecting module 102 comprises that the controller temperature is obtained submodule 1021 and the controller temperature is judged submodule 1022, wherein:
The controller temperature is obtained submodule 1021, can obtain the magnitude of voltage on the thermistor that is positioned at controller inside, and the resistance of thermistor can change along with variation of temperature, so by measuring the temperature value that magnitude of voltage on the thermistor just can controlled device.The controller temperature is obtained submodule 1021 voltage signal that obtains is delivered to controller temperature judgement submodule 1022.This controller temperature is obtained submodule 1021 and can also be realized by temperature sensor, and the concrete principle of work of temperature sensor belongs to general knowledge known in this field, is not giving unnecessary details herein.
The controller temperature is judged submodule 1022, pairing voltage signal numerical value of the controller temperature that receives and controller temperature preset value is made comparisons, and the comparative result that obtains is delivered in the control module 101.Particularly, this judgement submodule can be to use single limit comparer that operational amplifier is realized, described controller temperature preset value is as the threshold voltage of this single limit comparer.The maximum temperature that the embodiment of the present application middle controller can bear is 85 ℃, and described controller temperature preset value should be 85 ℃ of magnitudes of voltage that obtain after converting, if be 3V.When controller temperature detection value during less than described controller temperature preset value, described controller temperature judges that submodule 1022 output low levels are digital signal " 0 "; Otherwise when controller temperature detection value during more than or equal to described controller temperature preset value, described controller temperature judges that submodule 1022 output high level are digital signal " 1 "; The principle of work of single limit comparer belongs to general knowledge known in this field, so locate do not giving unnecessary details.
Shown in Fig. 3 b, motor terminal voltage detection module 1031 comprises the motor terminal voltage acquisition module 1031a and the motor terminal voltage judgement submodule 1032b that can acquire motor terminal voltage.When the motor terminal voltage detected value less than 85% or motor terminal voltage detected value of motor rated voltage greater than the motor output end rated voltage 115% the time, motor terminal voltage is judged submodule 1032b output high level; Otherwise motor terminal voltage is judged submodule 1032b output low level.
Shown in Fig. 3 c, motor temperature detection module 1032 comprises that motor temperature obtains submodule 1032a and motor temperature is judged submodule 1032b, the concrete course of work of these two submodules can be referring to the course of work of two submodules in the controller temperature detecting module 102, just motor temperature judges that the motor temperature preset value among the submodule 1032b is the pairing magnitude of voltage of maximum temperature that motor can bear, and is not giving unnecessary details herein.
Shown in Fig. 3 d, accelerator voltage detection module 1041 comprises that accelerator voltage obtains submodule 1041a and accelerator voltage is judged submodule 1041b, wherein:
Accelerator voltage obtains the voltage that submodule 1041a can acquire the accelerator output terminal.
Accelerator voltage judges that submodule 1041b judges the magnitude relationship between accelerator output voltage detected value and the accelerator output voltage preset value, described accelerator output voltage preset value is the accelerator input voltage value, when accelerator output voltage detected value during less than the accelerator input voltage value, accelerator voltage is judged submodule 1041b output low level; Otherwise accelerator voltage is judged submodule 1041b output high level.
Shown in Fig. 3 e, microswitch detection module 1042 comprises that the microswitch terminal voltage that can obtain microswitch both end voltage value is obtained submodule 1042a and the microswitch terminal voltage is judged submodule 1042b.
The microswitch terminal voltage is judged submodule 1042b, judges microswitch terminal voltage detected value and 0V relatively, and when microswitch terminal voltage detected value equaled 0V, the microswitch terminal voltage was judged submodule 1042b output low level; Otherwise the microswitch terminal voltage is judged submodule 1042b output high level.
Similar with motor terminal voltage detection module 1031, supply voltage detection module 105 comprises that the supply voltage that can obtain supply voltage value obtains submodule 1051 and supply voltage is judged submodule 1052.When the supply voltage detected value less than 85% or supply voltage detected value of power supply rated voltage greater than the power supply rated voltage 115% the time, supply voltage is judged submodule 1052 output high level; Otherwise supply voltage is judged submodule 1052 output low levels.
Referring to Fig. 4, the similar of main contactor contact detection module 1061, advance the contacts of contactor detection module 1071a and the contacts of contactor detection module 1072a that falls back includes contact voltage and obtains submodule 401 and contact voltage judgement submodule 402.Described contact voltage obtains submodule 401 can detect magnitude of voltage between the stationary contact that obtains contactor.When voltage between the contact greater than 0 the time, contact voltage is judged submodule 402 output high level; Otherwise contact voltage is judged submodule 402 output low levels.
Referring to Fig. 5, the similar of main contactor coil detection module 1062, advance the contactor coil detection module 1071b and the contactor coil detection module 1072b that falls back includes coil voltage and obtains submodule 501 and coil voltage judgement submodule 502.Described coil voltage obtains the magnitude of voltage that submodule 501 can detect the coil two ends that obtain contactor.When the voltage at coil two ends equaled 0, coil voltage was judged submodule 502 output high level; Otherwise coil voltage is judged submodule 502 output low levels.
Certainly; what can realize that detected value and preset value compare is not to have only this a kind of mode of voltage comparator; can also will obtain analog voltage signal that submodule obtains by mould/number conversion and then obtain digital signal; and then this digital signal is delivered in the control module 101; realize comparison procedure by control module 101, the every device that can realize that detected value and preset value compare all belongs to the scope that the application is open and protect.Present embodiment does not limit for each detection module preset value, concrete operating position difference, and preset value is also different.
Referring to Fig. 6, itself please also provide a kind of controller for electric vehicle self-diagnosing method by embodiment, comprising:
S601 obtains the detection signal of each detected parts;
Wherein, the detection signal that obtains each detected parts includes but not limited to: the voltage between the stationary contact of the voltage between the stationary contact of the voltage at the microswitch two ends of the temperature of the temperature of controller, the terminal voltage of motor, motor, the voltage of accelerator output terminal, accelerator, the output voltage of power supply, main contactor, the voltage at main contactor coil two ends, directional contactor, the voltage at directional contactor coil two ends.
S602 determines according to the detection signal that gets access to whether electric vehicle control system exists fault, and the output result.
Substep 1 compares the detected signal value of described a certain detected parts and the detected parameter corresponding preset value of these detected parts, obtains comparative result.
The concrete numerical value of detected parameter carried out the setting of preset value when wherein, the detected parameter corresponding preset value of detected parts should normally be moved according to these detected parts.For example, when detecting the temperature of controller, preset value should be set at the maximum temperature value that controller can bear, and when the detected value of controller temperature during greater than its corresponding preset value, comparative result is a high level.The setting of the detected parameter corresponding preset value of other detected parts can comparable device embodiment in corresponding part, do not giving unnecessary details herein.
Substep 2 judges according to described comparative result whether these detected parts exist fault, the output judged result.
When the detected value of the detected parameter of a certain detected parts was not in the scope at the preset value of this detected parts detected parameters, then there was fault in these detected parts, and can export this judged result by the mode that pilot lamp shows.
For above-mentioned method embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art will be appreciated that, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art should be understood that also the embodiment described in the instructions all belongs to preferred embodiment, and related action or module might not be that the present invention is necessary.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is difference with other embodiment.Especially, for method embodiment, because it is substantially similar in appearance to system embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of system embodiment.System embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of module to realize the purpose of present embodiment scheme according to the actual needs.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
Need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above only is the application's a embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.
Claims (10)
1. a controller for electric vehicle self-diagnosable system is characterized in that, comprising:
The detection module that links to each other and detect with each critical component of electric motor car with to described critical component;
The control module that connects described detection module;
The display module that links to each other with described control module;
Wherein:
Described control module is obtained the detection signal of above-mentioned each detection module, determines according to this detection signal whether electric vehicle control system exists fault, by described display module display result.
2. system according to claim 1 is characterized in that, described detection module comprises:
Controller temperature detecting module, motor detection module, accelerator detection module, supply voltage detection module, main contactor detection module and directional contactor detection module.
3. system according to claim 2 is characterized in that, described motor detection module comprises:
Electric moter voltage detection module that is connected with described control module and/or motor temperature detection module.
4. system according to claim 2 is characterized in that, described accelerator detection module comprises:
Microswitch detection module that is connected with described control module and/or accelerator output voltage detection module.
5. system according to claim 2 is characterized in that, described main contactor detection module comprises:
Main contactor contact detection module that is connected with described control module and main contactor coil detection module.
6. system according to claim 2 is characterized in that, described directional contactor detection module comprises:
Directional contactor contact detection module that is connected with described control module and directional contactor coil detection module.
7. according to each described system of claim 2-6, it is characterized in that the composition module of described each detection module comprises:
Obtain submodule, be used to obtain the detection signal of electric motor car critical component;
Comparison sub-module is relatively obtained detection signal and this detection signal corresponding preset value that submodule obtains, and comparative result is delivered to control module.
8. controller for electric vehicle self-diagnosing method, described electric motor car are provided with the detection module that detects its critical component, it is characterized in that, comprising:
Obtain the detection signal of each detection module;
Determine according to the detection signal that gets access to whether electric vehicle control system exists fault, and the output result.
9. method according to claim 8 is characterized in that, determines according to the detection signal that gets access to whether electric vehicle control system exists fault to comprise:
The detected signal value of described a certain detected parts and the detected parameter corresponding preset value of these detected parts are compared, obtain comparative result;
Judge according to described comparative result whether these detected parts exist fault.
10. method according to claim 8 is characterized in that, the detection module of described critical component comprises:
Controller temperature detecting module, motor detection module, accelerator detection module, supply voltage detection module, main contactor detection module and directional contactor detection module.
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| CN2010101545642A CN102236353A (en) | 2010-04-23 | 2010-04-23 | Self-diagnosis system and method of electric vehicle controller |
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| CN2010101545642A CN102236353A (en) | 2010-04-23 | 2010-04-23 | Self-diagnosis system and method of electric vehicle controller |
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| CN111391768A (en) * | 2020-03-26 | 2020-07-10 | 深圳市信亚科传感科技有限公司 | Vehicle emergency rescue system and rescue method |
| CN111949009A (en) * | 2020-08-14 | 2020-11-17 | 深圳市中物互联技术发展有限公司 | Self-diagnosis and self-maintenance method and device for embedded controller and storage medium |
| CN111949009B (en) * | 2020-08-14 | 2022-04-08 | 深圳市中物互联技术发展有限公司 | Self-diagnosis and self-maintenance method and device for embedded controller and storage medium |
| CN116027768A (en) * | 2023-02-14 | 2023-04-28 | 中国第一汽车股份有限公司 | Testing method and system of intelligent four-wheel drive control unit and vehicle |
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Application publication date: 20111109 |