CN108304939A - A method of fault detect is carried out by electric quantity consumption and interval of hiring a car - Google Patents
A method of fault detect is carried out by electric quantity consumption and interval of hiring a car Download PDFInfo
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Abstract
The invention discloses a kind of methods carrying out fault detect by electric quantity consumption and interval of hiring a car, including electric quantity consumption judgement and interval judgement of hiring a car；Electric quantity consumption decision process includes the following steps：The power consumption Q of motor in electric automobile under B1, the quasi- operating range of minute book logo；B2, benchmark power consumption Q is read0；B3, this vehicle consumption rate M is calculated；If B4, M are more than consumption rate threshold value, judging vehicle, there are failures；If M is less than or equal to consumption rate threshold value, judge that vehicle is normal.For electric vehicle, battery status directly determines the mileage travelled of vehicle, power output performance, and electric quantity consumption speed can react the battery status of vehicle.If electric quantity consumption speed shows that battery performance is bad, it is likely that predetermined distance can not be completed, be easier to the problem of casting anchor on the way occur, seriously affect the experience of hiring a car of user, also can cause negative image to leasing company.This programme is suitable for the monitoring of electric vehicle leasing system.
Description
Technical field
The present invention relates to electric vehicles to lease control field, more particularly, to one kind by electric quantity consumption and hiring a car be spaced into
The method of row fault detect.
Background technology
Currently, petroleum-based energy is constantly deficient, ecological environment constantly deteriorates, these are all to the development of automobile industry of countries in the world
Bring many factors that can not be determined.Global Auto industry is to crack the energy, environmental constraints, realizes sustainable development, for a long time with
To try to explore and make great efforts to push the transition of transportation and energy's dynamical system always.Since especially 08 year, in face of financial crisis, state
Border oil price high position concussion and increasingly serious energy-saving and emission-reduction pressure, world car industry entry comprehensive transportation and energy transition period,
Development of EV becomes the technology path for the realization transportation and energy transition for obtaining height common recognition in the world, thus the electronic vapour in the world
Vehicle industry entry new stage of accelerated development.
With the implementation for the policies such as limit purchase of restricting driving, electric vehicle lease also becomes by the advantages such as convenient, fast, limited few
More and more selected trip modes of people.
The state of electric vehicle directly affects the usage experience for the user that hires a car.State Intellectual Property Office of the People's Republic of China
It is disclosed on December 03rd, 2014 entitled《A kind of electric automobile whole failure sorted processing method》Patent document it is (open
Number：CN104176060), classify first to the failure that pure electric automobile is likely to occur, the failure of pure electric automobile is main
Including energy-storage system failure, drive system failure and other failures, wherein other described failures include ECU failures, key inspection
Failure is surveyed, accelerator pedal signal failure, brake pedal signal failure, gear signal failure, electric fault and motor drive on battery
Dynamic failure and the decision logic for determining various failures；Then draft the Reflector and value principle of a few major class failures；Last base
The judgement and correspondingly classification processing of complete vehicle fault mark are carried out in vehicle.The definition of progress complete vehicle fault and classification, and combine event
Barrier mark, carries out failure sorted processing.The relatively complicated complexity of this scheme, and cannot be direct by electric quantity consumption and interval of hiring a car
Judge vehicle-state.
Invention content
The present invention be mainly the scheme present in the prior art of solving it is complicated, can not be by electric quantity consumption and interval pair of hiring a car
The technical issues of vehicle-state is judged provides a kind of method carrying out fault detect by electric quantity consumption and interval of hiring a car.
What the present invention was mainly addressed by following technical proposals in view of the above technical problems：One kind is disappeared by electricity
Consume and hire a car interval carry out fault detect method, including electric quantity consumption judgement and hire a car interval judgement；If electric quantity consumption is sentenced
Any one judgement result in fixed and interval judgement of hiring a car breaks down for vehicle, then staff is notified to place under repair or tie up
Shield；If electric quantity consumption judges and hire a car that the judgement result of both interval judgements is all that vehicle is in normal condition, do not notify
Staff places under repair or safeguards；
Electric quantity consumption decision process includes the following steps：
The power consumption Q of motor in electric automobile under B1, the quasi- operating range of minute book logo；
B2, benchmark power consumption Q is read0；
B3, this vehicle consumption rate M is calculated, calculation formula is as follows：
M=Q/Q0；
If B4, M are more than consumption rate threshold value, judging vehicle, there are failures；If M is less than or equal to consumption rate threshold value,
Then judge that vehicle is normal.
For electric vehicle, battery status directly determines the mileage travelled of vehicle, power output performance, and electricity
Depletion rate can react the battery status of vehicle.If electric quantity consumption speed shows that battery performance is bad, it is likely that nothing
Method completes predetermined distance, is easier to the problem of casting anchor on the way occur, seriously affects the experience of hiring a car of user, can also give leasing company
Cause negative image.
Standard running distance determines as needed, generally may be set to 300-500 kilometers.Benchmark power consumption is plateau
The similarly hereinafter power consumption of the new battery room temperature conditional forms gauged distance of vehicle, when manufacture, test to obtain.Power consumption threshold value is as needed
It determines, generally may be set to 1.2-1.35.Power consumption only calculates motor power consumption, does not calculate air-conditioning, console, long-and-short distant light etc.
The power consumption of other equipment.
Preferably, after step B3, this vehicle consumption rate M is corrected in the following manner：
Vehicle running region is plains region, and M maintains initial value；
Vehicle running region is knob, and M reduces 10%；
Vehicle running region is mountainous region area, and M reduces 20%.
Consumption rate also has with the landform travelled compared with Important Relations, and landform is more flat, and output is more steady, and consumption rate is lower；Ground
Shape fluctuating quantity is bigger, and output variation is bigger, then consumption rate is higher.Therefore it needs to be modified consumption rate according to landform, ground
Shape fluctuating quantity is higher, and adjusted rate is higher, i.e. the tolerance deviation range of consumption rate is bigger.
Preferably, the interval judgement of hiring a car includes the following steps：
A1, user rent electric vehicle for the first time, record time of chartering for the first time；
A2, user give back electric vehicle, and record is returned the car the time；
A3, the time interval for calculating time of chartering and time of returning the car for the first time, are denoted as the first interval T1；
A4, the secondary rental electric vehicle of user, record secondary time of chartering；
A5, the time interval for calculating return the car time and secondary time of chartering, are denoted as the second interval T2；
A6, failure degree K is calculated, calculation formula is：
K=a × T1+b × T2
A is the first interval weighted value, and b is the second interval weighted value；
If A7, failure degree K are less than or equal to failure degree threshold value, judge that vehicle breaks down；If failure degree is more than
Or be equal to failure degree threshold value, then judge that vehicle is in normal condition.
User returns the car if very short time after hiring a car and replaces vehicle leasing, and it is uncomfortable to show that front truck exists
In drive the problem of.Foundation more can accurately sentence the interval time that the lease duration and front truck of front truck are returned the car to rear car lease
Disconnected vehicle-state.It extremely short hire a car duration if only relied on and judges possibility to judge or only rely on extremely short change trains interval of hiring a car
Larger error can be brought, and this programme can effectively improve the accuracy of judging result based on two time intervals.
Preferably, in step A6, a and b's and be 1,0.3≤a≤0.6,0.4≤b≤0.7.
The hire a car proportion at interval of changing trains is hired a car duration slightly larger than front truck, therefore the value of usually b is slightly larger than the value of a.
Preferably, the failure degree threshold value is -35 minutes 20 minutes.
If user completes three steps of hiring a car-change trains-hire a car again within 30 minutes or so time, can determine substantially
Front truck there is a problem of certain, be unsuitable for driving.
The substantial effect that the present invention is brought is that the event of electric vehicle can be judged by user behavior and consumption rate
Barrier avoids cumbersome sensor and decision logic, and practical degree is high, and anti-interference is good.
Description of the drawings
Fig. 1 be the present invention one kind hire a car interval decision process flow chart；
Fig. 2 is a kind of electric quantity consumption decision process flow chart of the present invention.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：A kind of method that fault detect is carried out by electric quantity consumption and interval of hiring a car of the present embodiment, including electricity
Amount consumption judgement and interval judgement of hiring a car；If electric quantity consumption judges and hires a car any one judgement result in the judgement of interval and is
Vehicle breaks down, then staff is notified to place under repair or safeguard；If electric quantity consumption judges and hires a car both interval judgements
Judgement result all be vehicle be in normal condition, then do not notify staff to place under repair or safeguard.
As shown in Figure 1, interval judgement of hiring a car includes the following steps：
A1, user rent electric vehicle for the first time, record time of chartering for the first time；
A2, user give back electric vehicle, and record is returned the car the time；
A3, the time interval for calculating time of chartering and time of returning the car for the first time, are denoted as the first interval T1；
A4, the secondary rental electric vehicle of user, record secondary time of chartering；
A5, the time interval for calculating return the car time and secondary time of chartering, are denoted as the second interval T2；
A6, failure degree K is calculated, calculation formula is：
K=a × T1+b × T2
A is the first interval weighted value, and b is the second interval weighted value；
If A7, failure degree K are less than or equal to failure degree threshold value, judge that vehicle breaks down；If failure degree is more than
Or be equal to failure degree threshold value, then judge that vehicle is in normal condition.
User returns the car if very short time after hiring a car and replaces vehicle leasing, and it is uncomfortable to show that front truck exists
In drive the problem of.Foundation more can accurately sentence the interval time that the lease duration and front truck of front truck are returned the car to rear car lease
Disconnected vehicle-state.It extremely short hire a car duration if only relied on and judges possibility to judge or only rely on extremely short change trains interval of hiring a car
Larger error can be brought, and this programme can effectively improve the accuracy of judging result based on two time intervals.
In step A6, a and b's and be 1,0.3≤a≤0.6,0.4≤b≤0.7.
The hire a car proportion at interval of changing trains is hired a car duration slightly larger than front truck, therefore the value of usually b is slightly larger than the value of a.
The failure degree threshold value is -35 minutes 20 minutes.
If user completes three steps of hiring a car-change trains-hire a car again within 30 minutes or so time, can determine substantially
Front truck there is a problem of certain, be unsuitable for driving.
As shown in Fig. 2, electric quantity consumption decision process includes the following steps：
The power consumption Q of motor in electric automobile under B1, the quasi- operating range of minute book logo；
B2, benchmark power consumption Q is read0；
B3, this vehicle consumption rate M is calculated, calculation formula is as follows：
M=Q/Q0；
If B4, M are more than consumption rate threshold value, judging vehicle, there are failures；If M is less than or equal to consumption rate threshold value,
Then judge that vehicle is normal.
For electric vehicle, battery status directly determines the mileage travelled of vehicle, power output performance, and electricity
Depletion rate can react the battery status of vehicle.If electric quantity consumption speed shows that battery performance is bad, it is likely that nothing
Method completes predetermined distance, is easier to the problem of casting anchor on the way occur, seriously affects the experience of hiring a car of user, can also give leasing company
Cause negative image.
After step B3, consumption rate M is corrected by service life adjusted rate R, and correction formula is：
M1=M × R
M1 is by the revised consumption rate of service life adjusted rate；Service life, adjusted rate R was determined by following formula：
R=-0.5 × p2+1
P=t/t0
T is the currently used duration of battery, t0For the rated life time of battery.
And battery performance itself is to be reduced with the increase for using duration, if reduced in normal range (NR),
It proves that it does not break down, if it is more than normal range (NR) to reduce rate, proves that battery breaks down, need to repair or more
It changes.When original state, battery adjusted rate is 1；As battery continues on, adjusted rate reduces, and corrects amplitude and increases, to consumption rate
Tolerance improve.
Consumption rate is also corrected by temperature adjustmemt rate F, and correction formula is：
M2=M1/F
M2 is by the revised consumption rate of temperature adjustmemt rate；Temperature adjustmemt rate F is determined by following formula：
F=-0.000375 × H2F≤20 degree Celsius+0.02 × H+0.75
H is average ambient temperature of this vehicle during travelling gauged distance.
Temperature directly affects battery performance, and when temperature is less than 20 degrees Celsius, battery performance declines more apparent, that is, effect of discharging
Rate reduces, and consumption rate improves, and temperature more low power consumption rate is higher, needs raising amendment amplitude inclined come the tolerance for increasing consumption rate at this time
Poor range avoids judging by accident.
Vehicle running region is plains region, and consumption rate maintains initial value；
Vehicle running region is knob, and consumption rate reduces 10%；
Vehicle running region is mountainous region area, and consumption rate reduces 20%.
Consumption rate also has with the landform travelled compared with Important Relations, and landform is more flat, and output is more steady, and consumption rate is lower；Ground
Shape fluctuating quantity is bigger, and output variation is bigger, then consumption rate is higher.Therefore it needs to be modified consumption rate according to landform, ground
Shape fluctuating quantity is higher, and adjusted rate is higher, i.e. the tolerance deviation range of consumption rate is bigger.
The present embodiment may be incorporated into charge rate and assist discharge rate to show vehicle-state, and the calculating of charge and discharge rate N is public
Formula is as follows：
N=c × M3+d × S/S0
In formula, M3 is the consumption rate after three service life adjusted rate, temperature adjustmemt rate and landform factor corrections, and c is consumption
Electric weighted value, d are charging weighted value, and S is nearest ten charge rates, S0For original charge rate.
If N is more than charge and discharge rate threshold value, judging vehicle, there are failures；If N is less than or equal to charge and discharge rate threshold value,
Then judge that vehicle is normal.
If Vehicular charging rate is too fast, showing battery capacity, there are problems, belong to abnormality.Pass through the speed that charges
Rate and discharge rate combine, and can whether there is failure with accurate judgement vehicle.
C and d's and be 1,0.5≤c≤0.8,0.2≤d≤0.5.
Since the motor on automobile is to be fixedly connected, and motor performance can be from the experience of driver with the connection of battery
In directly reflect, the probability for measurement error occur is smaller, and the connection of battery and charging pile be detachable connection, occur
The probability bigger of measurement error, therefore power consumption weighted value is greater than or equal to charging weighted value.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although be used more herein hire a car for the first time, power consumption, the terms such as rated life time, be not precluded using other
The possibility of term.The use of these items is only for more easily describe and explain the essence of the present invention；They are explained
It is all disagreed with spirit of that invention at any one of the additional limitations.
Claims (5)
1. a kind of method carrying out fault detect by electric quantity consumption and interval of hiring a car, which is characterized in that sentence including electric quantity consumption
Fixed and interval judgement of hiring a car；If electric quantity consumption judges and hires a car that any one judgement result in the judgement of interval occurs for vehicle
Failure then notifies staff to place under repair or safeguard；If electric quantity consumption judges and hires a car the judgement knot of both interval judgements
Fruit is all that vehicle is in normal condition, then does not notify staff to place under repair or safeguard；
Electric quantity consumption decision process includes the following steps：
The power consumption Q of motor in electric automobile under B1, the quasi- operating range of minute book logo；
B2, benchmark power consumption Q is read0；
B3, this vehicle consumption rate M is calculated, calculation formula is as follows：
M=Q/Q0；
If B4, M are more than consumption rate threshold value, judging vehicle, there are failures；If M is less than or equal to consumption rate threshold value, sentence
It is normal to determine vehicle.
2. a kind of method carrying out fault detect by electric quantity consumption and interval of hiring a car according to claim 1, feature
It is, after step B3, this vehicle consumption rate M is corrected in the following manner：
Vehicle running region is plains region, and M maintains initial value；
Vehicle running region is knob, and M reduces 10%；
Vehicle running region is mountainous region area, and M reduces 20%.
3. a kind of method carrying out fault detect by electric quantity consumption and interval of hiring a car according to claim 1, feature
It is, interval judgement of hiring a car includes the following steps：
A1, user rent electric vehicle for the first time, record time of chartering for the first time；
A2, user give back electric vehicle, and record is returned the car the time；
A3, the time interval for calculating time of chartering and time of returning the car for the first time, are denoted as the first interval T1；
A4, the secondary rental electric vehicle of user, record secondary time of chartering；
A5, the time interval for calculating return the car time and secondary time of chartering, are denoted as the second interval T2；
A6, failure degree K is calculated, calculation formula is：
K=a × T1+b × T2
A is the first interval weighted value, and b is the second interval weighted value；
If A7, failure degree K are less than or equal to failure degree threshold value, judge that vehicle breaks down；If failure degree is more than or waits
In failure degree threshold value, then judge that vehicle is in normal condition.
4. a kind of method carrying out fault detect by electric quantity consumption and interval of hiring a car according to claim 3, feature
Be, in step A6, a and b's and be 1,0.3≤a≤0.6,0.4≤b≤0.7.
5. a kind of method carrying out fault detect by electric quantity consumption and interval of hiring a car according to claim 3 or 4, special
Sign is that the failure degree threshold value is -35 minutes 20 minutes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110503739A (en) * | 2019-08-15 | 2019-11-26 | 杭州鸿晶自动化科技有限公司 | A kind of information processing method of shared Moped Scooter |
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| CN105654623A (en) * | 2015-12-28 | 2016-06-08 | 北京印刷学院 | Public bike fault detection device and method |
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| CN201359734Y (en) * | 2008-12-25 | 2009-12-09 | 万向电动汽车有限公司 | Remote vehicle operation condition monitoring system |
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| CN102509447A (en) * | 2011-10-20 | 2012-06-20 | 浙江工商大学 | Fuzzy recognition method of city public bicycle fault |
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Application publication date: 20180720 |