CN105620487B - A kind of evaluation method and device of electric vehicle continual mileage - Google Patents

A kind of evaluation method and device of electric vehicle continual mileage Download PDF

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Publication number
CN105620487B
CN105620487B CN201610108645.6A CN201610108645A CN105620487B CN 105620487 B CN105620487 B CN 105620487B CN 201610108645 A CN201610108645 A CN 201610108645A CN 105620487 B CN105620487 B CN 105620487B
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soc
battery
electric vehicle
continual mileage
power battery
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CN105620487A (en
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陆群
雷晓霂
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Beijing Changcheng Huaguan Automobile Technology Development Co Ltd
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Beijing Changcheng Huaguan Automobile Technology Development Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

This application discloses a kind of evaluation method and device of electric vehicle continual mileage, wherein method includes：When electric vehicle starts, entire car controller determines the initial continual mileage of the electric vehicle according to the battery charge state (SOC) of current power battery；After the electric vehicle starts, the entire car controller obtains the battery parameter and speed of power battery in real time, and is spaced according to preset update, according to the battery parameter and speed, determines the average current drain E in nearest preset time period TaAnd current battery remaining power ES, according to the EaWith the ES, determine the real-time continual mileage S of the electric vehiclex, the battery parameter includes voltage, electric current and SOC；When the electric vehicle, which stops, to be powered off, the entire car controller is to the current continual mileage SxIt is stored.Using the present invention, the estimation accuracy of electric vehicle continual mileage can effectively improve.

Description

A kind of evaluation method and device of electric vehicle continual mileage
Technical field
The present invention relates to automobile technical field, more particularly, to a kind of evaluation method of electric vehicle continual mileage and Device.
Background technology
Currently, with energy crisis, the getting worse of environmental problem, the national promotion dynamics to electric vehicle is increasingly Greatly.And continual mileage is always the key factor for influencing electric vehicle further genralrlization.Continual mileage refers to electric vehicle from storage After battery is fully charged mileage is continuously driven under certain road conditions.Real-time continual mileage, i.e., current vehicle-loaded battery electricity quantity can prop up The mileage travelled held will directly affect judgement of the driver to vehicle-state, and can be directly related to vehicle pre- according to driver Phase travels to destination.
It is total according to currently having been consumed after fully charged from last time in the existing estimation scheme about real-time continual mileage Then the power consumption is considered as later power consumption level by electricity and corresponding total travel distance, the power consumption of unit of account distance, in conjunction with Current remaining capacity calculates continual mileage.
Whole driving process carries out continual mileage calculating as same state in said program, and in practical applications, Power consumption condition is different under different road conditions, and therefore, said program is due to cannot be according to actual driving conditions come in driving The estimation of journey, therefore, obtained estimation result can not be inconsistent with pratical and feasible mileage of sailing.
It can be seen that the estimation scheme of existing real-time continual mileage has that accuracy is low.
Invention content
The purpose of the present invention is to propose to a kind of evaluation methods of electric vehicle continual mileage, can improve electric vehicle driving The estimation accuracy of mileage.
Another object of the present invention is to propose a kind of estimation device of electric vehicle continual mileage, can improve electronic vapour The estimation accuracy of vehicle continual mileage.
According to the one side of embodiment of the present invention, a kind of evaluation method of electric vehicle continual mileage is proposed, including：
When electric vehicle starts, entire car controller determines institute according to the battery charge state (SOC) of current power battery State the initial continual mileage of electric vehicle；
After the electric vehicle starts, the entire car controller obtains the battery parameter and speed of power battery in real time, And be spaced according to preset update, according to the battery parameter and speed, determine the average current drain E in nearest preset time period Ta And current battery remaining power ES, according to the EaWith the ES, determine the real-time continual mileage S of the electric vehiclex, The battery parameter includes voltage, electric current and SOC；
When the electric vehicle, which stops, to be powered off, the entire car controller is to the current continual mileage SxIt is deposited Storage.
Further, the initial continual mileage of the determination electric vehicle includes：
It, will be described initial if the SOC of presently described power battery indicates that the power battery is in Full Power State Continual mileage S0It is set as preset Full Charge Capacity continual mileage value Smax；
If the SOC of presently described power battery indicates that the power battery is not in Full Power State, upper one is judged Whether the power battery filled electricity after secondary traveling, if it is, according to S0=Smax×(SOCnow-SOCmin)/ (SOCfull-SOCmin), calculate the initial continual mileage S0, wherein the SOCnowFor the SOC value of presently described power battery, SOCminFor minimum SOC value of preset battery when available, the SOCfullSOC value when electricity full for the power battery, it is no Then, by the initial continual mileage S0It is set as the continual mileage value determined at the end of last traveling.
Further, the real-time continual mileage of the determination electric vehicle includes：
The entire car controller calculates the electric vehicle after the startup according to the speed obtained after automobile starting Mileage travelled Snow；
According to the battery gross energy of the SOC of presently described power battery and the preset power battery, determine currently Battery remaining power ES；
According to the battery parameter and speed obtained in the nearest period T, determine in the period T recently Average current drain Ea；
Work as SnowWhen≤d, according to the ESWith the Ea, according to Sx=ES/Ea, calculate the real-time continual mileage Sx, In, d is preset distance threshold；
Work as SnowWhen ＞ d, according to the SnowWith the battery parameter obtained after the startup, institute after the startup is calculated State the average current drain E of electric vehiclez；According to the Ez, the EaWith preset correction factor k, according to K=(Ea/Ez) × k, meter Calculate the following operating mode predictive coefficient K；According to the K, the ESWith the Ea, according to Sx=ES/Ea× K calculates the real-time driving Mileage Sx。
Further, the preset time period T includes m sliding window W, between adjacent sliding window between be divided into t, m >= 1, t >=0；
Average current drain E in the nearest preset time period T of determinationaIncluding：
According to the battery parameter and speed obtained in the nearest period T, the electric vehicle is calculated at this Between in section T each sliding window average current drain；
The mean value for calculating the average current drain of all sliding windows in nearest period T, using the mean value as described in Average current drain Ea。
Further, described store includes：
The entire car controller is by the current continual mileage SxThe electric erazable programmable that this controller is written read-only is deposited In reservoir (EEPROM).
According to the another aspect of embodiment of the present invention, a kind of estimation device of electric vehicle continual mileage is proposed, including：
First module, for when electric vehicle starts, according to the SOC of current power battery, determining the electric vehicle Initial continual mileage；
Second module, for after the electric vehicle starts, obtaining the battery parameter and speed of power battery in real time, and It is spaced according to preset update, according to the battery parameter and speed, determines the average current drain E in nearest preset time period TaWith And current battery remaining power ES, according to the EaWith the ES, determine the real-time continual mileage S of the electric vehiclex, institute It includes voltage, electric current and SOC to state battery parameter；
Third module is used for when the electric vehicle stops and powers off, to the current continual mileage SxIt is stored.
Further, first module is specifically used for,
It, will be described initial if the SOC of presently described power battery indicates that the power battery is in Full Power State Continual mileage S0It is set as preset Full Charge Capacity continual mileage value Smax；
If the SOC of presently described power battery indicates that the power battery is not in Full Power State, upper one is judged Whether the power battery filled electricity after secondary traveling, if it is, according to S0=Smax×(SOCnow-SOCmin)/ (SOCfull-SOCmin), calculate the initial continual mileage S0, wherein the SOCnowFor the SOC value of presently described power battery, SOCminFor minimum SOC value of preset battery when available, the SOCfullSOC value when electricity full for the power battery, it is no Then, by the initial continual mileage S0It is set as the continual mileage value determined at the end of last traveling.
Further, second module is specifically used for
According to the speed obtained after automobile starting, the mileage travelled S of the electric vehicle after the startup is calculatednow；
According to the battery gross energy of the SOC of presently described power battery and the preset power battery, determine currently Battery remaining power ES；
According to the battery parameter and speed obtained in the nearest period T, determine in the period T recently Average current drain Ea；
Work as SnowWhen≤d, according to the ESWith the Ea, according to Sx=ES/Ea, calculate the real-time continual mileage Sx, In, d is preset distance threshold；
Work as SnowWhen ＞ d, according to the SnowWith the battery parameter obtained after the startup, institute after the startup is calculated State the average current drain E of electric vehiclez；According to the Ez, the EaWith preset correction factor k, according to K=(Ea/Ez) × k, meter Calculate the following operating mode predictive coefficient K；According to the K, the ESWith the Ea, according to Sx=ES/Ea× K calculates the real-time driving Mileage Sx。
Further, second module is specifically used for
According to the battery parameter and speed obtained in the nearest period T, the electric vehicle is calculated at this Between in section T each sliding window average current drain；
The mean value for calculating the average current drain of all sliding windows in nearest period T, using the mean value as described in Average current drain Ea；
Wherein, the preset time period T includes m sliding window W, between adjacent sliding window between be divided into t, m >=1, t ≥0。
Further, the third module is specifically used for
When the electric vehicle, which stops, to be powered off, by the current continual mileage SxIt is written in EEPROM.
It can be seen from the above technical proposal that the evaluation method and device of electric vehicle continual mileage proposed by the present invention, By the division to each work condition state of electric vehicle, different real-time continual mileage estimation processing is carried out, especially in automobile According to the power consumption situation travelled in a period of time recently after startup, rather than according to power consumption situation total after full electricity, to estimate reality When continual mileage, estimation result can be made more to be consistent with actual travel situation, therefore can effectively improve the accuracy of estimation.
Description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the evaluation method flow diagram of the electric vehicle continual mileage of the embodiment of the present invention.
Fig. 2 is the embodiment flow diagram of Fig. 1 steps 101.
Fig. 3 is that real-time continual mileage S is determined in Fig. 1 steps 102xEmbodiment flow diagram.
Fig. 4 is the estimation apparatus structure schematic diagram of the electric vehicle continual mileage of the embodiment of the present invention.
Specific implementation mode
In order to which the technical features, objects and effects to invention are more clearly understood, now control description of the drawings is of the invention Specific implementation mode, in the various figures identical label indicate identical part.
It is succinct and intuitive in order to what is described, hereafter by describing several representative embodiments come the side to the present invention Case is illustrated.A large amount of details is only used for helping to understand the solution of the present invention in embodiment.However, it will be apparent that the present invention Technical solution can be not limited to these details when realizing.In order to avoid unnecessarily having obscured the solution of the present invention, some realities It applies mode not described meticulously, but only gives frame.Hereinafter, " comprising " refers to " including but not limited to ", " root According to ... " refer to " according at least to ..., but be not limited to according only to ... ".Due to the speech habits of Chinese, hereinafter without spy When not pointing out the quantity of an ingredient, it is meant that the ingredient is either one or more, or can be regarded as at least one.
Core of the invention thought is：The power consumption situation travelled in basis a period of time recently after automobile starting, without It is power consumption situation total after full electricity, to estimate real-time continual mileage.In this way, estimation result and actual travel situation more phase can be made Symbol, effectively improves the accuracy of estimation.
Fig. 1 is the flow diagram of the embodiment of the present invention, as shown in Figure 1, in the electric vehicle driving that the embodiment is realized The evaluation method of journey includes：
Step 101, when electric vehicle starts, entire car controller is according to the battery charge state of current power battery (SOC), the initial continual mileage of the electric vehicle is determined.
This step, in electric vehicle electrifying startup, initially being estimated the continual mileage of automobile.Had When body is estimated, in order to improve the accuracy of initial continual mileage, it may be considered that the specific battery charge state of power battery, for Different states uses different evaluation methods.Preferably, following methods may be used to determine above-mentioned initial continual mileage, such as Shown in Fig. 2, this method includes：
Step 1011 judges whether the SOC of presently described power battery indicates that the power battery is in Full Power State, If so, thening follow the steps 1012, otherwise, step 1013 is executed.
Step 1012, by the initial continual mileage S0It is set as preset Full Charge Capacity continual mileage value Smax。
In this step, when battery is in Full Power State, directly by initial continual mileage S0It is set as Full Charge Capacity driving Mileage value Smax, the SmaxCan be the default value being arranged when automobile manufacture, which can pass through the multiple examination under standard condition It tests to obtain, specific preparation method is grasped that details are not described herein by those skilled in the art.
Step 1013, judge last traveling after the power battery whether filled electricity, if so, thening follow the steps 1015；Otherwise, step 1014 is executed.
In this step, when battery is not in full power state, need whether filled electricity again before judging this startup, if do not had Filled electricity, then in subsequent step directly using upper primary parking when obtained continual mileage as initial continual mileage S0, If filling electricity, need to recalculate continual mileage according to the last charging situation, it specifically will be real in step 105 It is existing.
Step 1014, by the initial continual mileage S0It is set as the continual mileage determined at the end of last traveling Value.
Step 1015, according to S0=Smax×(SOCnow-SOCmin)/(SOCfull-SOCmin), it calculates in the initial driving Journey S0, wherein the SOCnowFor the SOC value of presently described power battery, SOCminFor minimum SOC of preset battery when available Value, the SOCfullSOC value when electricity full for the power battery.
In this step, minimum SOC value when by according to the newest SOC and available battery obtained after the last charge, To the initial continual mileage S0It is estimated, in this way, initial continual mileage S can be effectively improved0Estimation accuracy.
Step 102, after the electric vehicle starts, the entire car controller obtains the battery parameter of power battery in real time And speed, and be spaced according to preset update, according to the battery parameter and speed, determine flat in nearest preset time period T Equal power consumption EaAnd current battery remaining power ES, according to the EaWith the ES, determine the real-time driving of the electric vehicle Mileage Sx, the battery parameter includes voltage, electric current and SOC.
This step is used for after electric vehicle startup, according to the power consumption situation in current time nearest period T, to electricity The real-time continual mileage S of electrical automobilexIt is estimated.What needs to be explained here is that this step is after being started according to this, currently most Power consumption situation in nearly a period of time, to estimate real-time continual mileage Sx, rather than simply according to power consumption feelings total after full electricity Condition estimated, in this way, since the foundation estimated more is matched with current traveling road conditions, thus may insure to continuing in real time Sail mileage SxThe accuracy of estimation.
In practical applications, the update interval, if setting is excessive, will be not achieved the mesh of real-time estimation continual mileage , if setting is too small, can the too fast operand for leading to controller of estimation frequency it is excessive, specifically, can be by art technology Personnel consider above-mentioned rule, and appropriate value is arranged according to actual needs.
In order to further increase real-time continual mileage SxAccuracy, preferably, it is contemplated that electric vehicle is opened at this Different operating ranges after dynamic, to estimate real-time continual mileage Sx, that is, operating range after electric vehicle is in this startup compared with When long, that is, after reaching certain threshold value, prediction revision can be carried out to future travel distance according to history operating mode, it is made more to meet reality Border, so as to reduce the influence of some specific road section is excessively high, too low power consumption to continual mileage estimation accuracy, it can be ensured that Over long distances when driving to real-time continual mileage SxThe accuracy of estimation.Method shown in Fig. 3 specifically may be used and realize this mesh 's.
Preferably, as shown in figure 3, the determination method of the real-time continual mileage of the electric vehicle may include following steps Suddenly：
Step 1021, the entire car controller calculate institute after the startup according to the speed obtained after automobile starting State the mileage travelled S of electric vehiclenow.Battery according to the SOC of presently described power battery and the preset power battery is total Energy determines current battery remaining power ES；According to the battery parameter and speed obtained in the nearest period T, Determine the average current drain E in the period T recentlya。
In this step, the mileage travelled SnowWith battery remaining power ESCircular, be people in the art Member is grasped, and details are not described herein.
Preferably, in order to improve average current drain E in this stepaAccuracy, the period T can be set by more to A sliding window is constituted, and is calculated respectively the average current drain in each sliding window, then again by these sliding windows Average current drain is averaged, using the average value as the average current drain E of the perioda.Specifically, this is realized using following methods One purpose.
The period T includes m sliding window W, between adjacent sliding window between be divided into t.
Wherein, m >=1, the specific value of the interval t >=0, m and t, can be by those skilled in the art according to reality It needs to be arranged.
Correspondingly, following methods, which may be used, determines average current drain E in nearest preset time period Ta：
According to the battery parameter and speed obtained in the nearest period T, the electric vehicle is calculated at this Between in section T each sliding window average current drain；Calculate the equal of the average current drain of all sliding windows in nearest period T Value, using the mean value as the average current drain Ea。
Step 1022 works as SnowWhen≤d, according to the ESWith the Ea, according to Sx=ES/Ea, calculate in the real-time driving Journey Sx, wherein d is preset distance threshold.
The distance threshold, for limit need according to history operating mode to the following continual mileage carry out prediction revision when Machine appropriate value can be arranged according to actual needs by those skilled in the art.
Step 1023 works as SnowWhen ＞ d, according to the SnowWith the battery parameter obtained after the startup, institute is calculated State the average current drain E of the electric vehicle after startingz；According to the Ez, the EaWith preset correction factor k, according to K= (Ea/Ez) × k calculates the following operating mode predictive coefficient K；According to the K, the ESWith the Ea, according to Sx=ES/Ea× K is calculated The real-time continual mileage Sx。
In this step, the average current drain E of the electric vehicle after the startupzCircular, be this field skill Art personnel are grasped, and details are not described herein.
The correction factor k can be first passed through experiment in advance by those skilled in the art to determine appropriate value, preferably, 0 ≤d≤2。
Step 103, when the electric vehicle stop power off when, the entire car controller is to the current continual mileage Sx It is stored.
This step is used for when parking of automobile powers off, and preserves current continual mileage Sx, so that the electric vehicle is next Continual mileage is accurately estimated when startup.
Preferably, when specifically carrying out the preservation, it can be by current continual mileage SxIt is written to controller In EEPROM.In this way, when electric vehicle powers on next time, it can read out and stop in last time directly from the corresponding position of EEPROM The continual mileage estimated value at moment.
Fig. 4 is a kind of estimation apparatus structure schematic diagram of electric vehicle continual mileage corresponding with the above method.Such as Fig. 4 Shown, which includes：
First module 401, for when electric vehicle starts, according to the SOC of current power battery, determining the electronic vapour The initial continual mileage of vehicle.
Second module 402, for after the electric vehicle starts, obtaining the battery parameter and vehicle of power battery in real time Speed, and be spaced according to preset update, according to the battery parameter and speed, determine the average electricity in nearest preset time period T Consume EaAnd current battery remaining power ES, according to the EaWith the ES, determine the real-time continual mileage of the electric vehicle Sx, the battery parameter includes voltage, electric current and SOC.
Third module 402 is used for when the electric vehicle stops and powers off, to the current continual mileage SxIt is deposited Storage.
Preferably, first module 401 is specifically used for：
It, will be described initial if the SOC of presently described power battery indicates that the power battery is in Full Power State Continual mileage S0It is set as preset Full Charge Capacity continual mileage value Smax；
If the SOC of presently described power battery indicates that the power battery is not in Full Power State, upper one is judged Whether the power battery filled electricity after secondary traveling, if it is, according to S0=Smax×(SOCnow-SOCmin)/ (SOCfull-SOCmin), calculate the initial continual mileage S0, wherein the SOCnowFor the SOC value of presently described power battery, SOCminFor minimum SOC value of preset battery when available, the SOCfullSOC value when electricity full for the power battery, it is no Then, by the initial continual mileage S0It is set as the continual mileage value determined at the end of last traveling.
Preferably, second module 402 is specifically used for：
According to the speed obtained after automobile starting, the mileage travelled S of the electric vehicle after the startup is calculatednow；
According to the battery gross energy of the SOC of presently described power battery and the preset power battery, determine currently Battery remaining power ES；
According to the battery parameter and speed obtained in the nearest period T, determine in the period T recently Average current drain Ea；
Work as SnowWhen≤d, according to the ESWith the Ea, according to Sx=ES/Ea, calculate the real-time continual mileage Sx, In, d is preset distance threshold；
Work as SnowWhen ＞ d, according to the SnowWith the battery parameter obtained after the startup, institute after the startup is calculated State the average current drain E of electric vehiclez；According to the Ez, the EaWith preset correction factor k, according to K=(Ea/Ez) × k, meter Calculate the following operating mode predictive coefficient K；According to the K, the ESWith the Ea, according to Sx=ES/Ea× K calculates the real-time driving Mileage Sx。
Preferably, second module 402 is specifically used for：
According to the battery parameter and speed obtained in the nearest period T, the electric vehicle is calculated at this Between in section T each sliding window average current drain；
The mean value for calculating the average current drain of all sliding windows in nearest period T, using the mean value as described in Average current drain Ea；
Wherein, the preset time period T includes m sliding window W, between adjacent sliding window between be divided into t, m >=1, t ≥0。
Preferably, the third module 403 is specifically used for：
When the electric vehicle, which stops, to be powered off, by the current continual mileage SxIt is written in EEPROM.
In practical applications, the estimation device of above-mentioned electric vehicle continual mileage can be set to the vehicle control of electric vehicle In device processed.
It should be noted that in practical applications, the electric vehicle continual mileage that embodiment of the present invention can be proposed Evaluation method and device be applied in various types of electric vehicles, including electric motor coach, electrocar, electrically driven treadmill etc. is each The automobile of class pure electric vehicle type.
By above-mentioned specific embodiment can be seen that electric vehicle continual mileage proposed by the present invention evaluation method and Device is carried out different real-time continual mileage estimation processing, is especially existed by the division to each work condition state of electric vehicle According to the traveling power consumption situation in nearest a period of time after automobile starting, real-time estimation is carried out to continual mileage, rather than it is simple Ground carries out estimating according to power consumption situation total after full electricity, therefore, can make the estimation result and actual travel feelings of continual mileage Condition is more consistent, so as to the accuracy for effectively improving estimation and reasonable validity, so as to by more accurate automobile driving Mileage real-time display provides more accurate vehicle mileage information to driver, for driver.
The series of detailed descriptions listed above only for the present invention feasible embodiment specifically It is bright, and not to limit the scope of the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of evaluation method of electric vehicle continual mileage, which is characterized in that including：
When electric vehicle starts, entire car controller determines described electronic according to the battery charge state SOC of current power battery The initial continual mileage of automobile；
After the electric vehicle starts, the entire car controller obtains the battery parameter and speed of power battery in real time, and presses It is spaced according to preset update, according to the battery parameter and speed, determines the average current drain E in nearest preset time period TaAnd Current battery remaining power ES, according to the EaWith the ES, determine the real-time continual mileage S of the electric vehiclex, described Battery parameter includes voltage, electric current and SOC；
When the electric vehicle, which stops, to be powered off, the entire car controller is to the current continual mileage SxIt is stored；
Wherein, the real-time continual mileage of the determination electric vehicle includes：
The entire car controller calculates the row of the electric vehicle after the startup according to the speed obtained after automobile starting Sail mileage Snow；
According to the battery gross energy of the SOC of presently described power battery and the preset power battery, current battery is determined Dump energy ES；
According to the battery parameter and speed obtained in the nearest period T, being averaged in the period T recently is determined Power consumption Ea；
Work as SnowWhen≤d, according to the ESWith the Ea, according to Sx=ES/Ea, calculate the real-time continual mileage Sx, wherein d is Preset distance threshold；
Work as SnowWhen ＞ d, according to the SnowWith the battery parameter obtained after the startup, the electricity after the startup is calculated The average current drain E of electrical automobilez；According to the Ez, the EaWith preset correction factor k, according to K=(Ea/Ez) × k is calculated not Carry out operating mode predictive coefficient K；According to the K, the ESWith the Ea, according to Sx=ES/Ea× K calculates the real-time continual mileage Sx。
2. according to the method described in claim 1, it is characterized in that, the initial continual mileage packet of the determination electric vehicle It includes：
If the SOC of presently described power battery indicates that the power battery is in Full Power State, by the initial driving Mileage S0It is set as preset Full Charge Capacity continual mileage value Smax；
If the SOC of presently described power battery indicates that the power battery is not in Full Power State, last row is judged Whether the power battery filled electricity after sailing, if it is, according to S0=Smax×(SOCnow-SOCmin)/(SOCfull- SOCmin), calculate the initial continual mileage S0, wherein the SOCnowFor the SOC value of presently described power battery, SOCminFor Minimum SOC value when preset battery is available, the SOCfullSOC value when electricity full for the power battery otherwise will be described Initial continual mileage S0It is set as the continual mileage value determined at the end of last traveling.
3. adjacent according to the method described in claim 1, it is characterized in that, the preset time period T includes m sliding window W T, m >=1, t >=0 are divided between sliding window；
Average current drain E in the nearest preset time period T of determinationaIncluding：
According to the battery parameter and speed obtained in the nearest period T, the electric vehicle is calculated in period T In each sliding window average current drain；
The mean value for calculating the average current drain of all sliding windows in nearest period T, using the mean value as described average Power consumption Ea。
4. method described in claim 1, which is characterized in that the storage includes：
The entire car controller is by the current continual mileage Sx, the Electrically Erasable Programmable Read-Only Memory of this controller is written In EEPROM.
5. a kind of estimation device of electric vehicle continual mileage, which is characterized in that including：
First module, for when electric vehicle starts, according to the battery charge state SOC of current power battery, described in determination The initial continual mileage of electric vehicle；
Second module is used for after the electric vehicle starts, in real time the battery parameter and speed of acquisition power battery, and according to Preset update interval, according to the battery parameter and speed, determines the average current drain E in nearest preset time period TaAnd work as Preceding battery remaining power ES, according to the EaWith the ES, determine the real-time continual mileage S of the electric vehiclex, the electricity Pond parameter includes voltage, electric current and SOC；
Third module is used for when the electric vehicle stops and powers off, to the current continual mileage SxIt is stored；
Wherein, second module is specifically used for
According to the speed obtained after automobile starting, the mileage travelled S of the electric vehicle after the startup is calculatednow；
According to the battery gross energy of the SOC of presently described power battery and the preset power battery, current battery is determined Dump energy ES；
According to the battery parameter and speed obtained in the nearest period T, being averaged in the period T recently is determined Power consumption Ea；
Work as SnowWhen≤d, according to the ESWith the Ea, according to Sx=ES/Ea, calculate the real-time continual mileage Sx, wherein d is Preset distance threshold；
Work as SnowWhen ＞ d, according to the SnowWith the battery parameter obtained after the startup, the electricity after the startup is calculated The average current drain E of electrical automobilez；According to the Ez, the EaWith preset correction factor k, according to K=(Ea/Ez) × k is calculated not Carry out operating mode predictive coefficient K；According to the K, the ESWith the Ea, according to Sx=ES/Ea× K calculates the real-time continual mileage Sx。
6. estimation device according to claim 5, which is characterized in that first module is specifically used for,
If the SOC of presently described power battery indicates that the power battery is in Full Power State, by the initial driving Mileage S0It is set as preset Full Charge Capacity continual mileage value Smax；
If the SOC of presently described power battery indicates that the power battery is not in Full Power State, last row is judged Whether the power battery filled electricity after sailing, if it is, according to S0=Smax×(SOCnow-SOCmin)/(SOCfull- SOCmin), calculate the initial continual mileage S0, wherein the SOCnowFor the SOC value of presently described power battery, SOCminFor Minimum SOC value when preset battery is available, the SOCfullSOC value when electricity full for the power battery otherwise will be described Initial continual mileage S0It is set as the continual mileage value determined at the end of last traveling.
7. estimation device according to claim 5, which is characterized in that second module is specifically used for
According to the battery parameter and speed obtained in the nearest period T, the electric vehicle is calculated in period T In each sliding window average current drain；
The mean value for calculating the average current drain of all sliding windows in nearest period T, using the mean value as described average Power consumption Ea；
Wherein, the preset time period T includes m sliding window W, between adjacent sliding window between be divided into t, m >=1, t >=0.
8. estimation device according to claim 5, which is characterized in that the third module is specifically used for
When the electric vehicle, which stops, to be powered off, by the current continual mileage SxElectrically Erasable Programmable Read-Only Memory is written In EEPROM.
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