CN107458259A - A kind of New-energy electric vehicle remaining mileage evaluation method - Google Patents

A kind of New-energy electric vehicle remaining mileage evaluation method Download PDF

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CN107458259A
CN107458259A CN201710736190.7A CN201710736190A CN107458259A CN 107458259 A CN107458259 A CN 107458259A CN 201710736190 A CN201710736190 A CN 201710736190A CN 107458259 A CN107458259 A CN 107458259A
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soc
mileage
values
mrow
value
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CN107458259B (en
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何伟
盛旺
陈俊兵
陈军
陈一军
王冬
肖东
冷邦平
刘小飞
张洋
廖绍文
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Chengdu Yajun New Energy Automobile Technology Co Ltd
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Chengdu Yajun New Energy Automobile Technology Co Ltd
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    • 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
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/52—Control modes by future state prediction drive range estimation, e.g. of estimation of available travel distance
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/54—Energy consumption estimation
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

The present invention relates to electric vehicle engineering field.Purpose is to provide a kind of simple and reliable New-energy electric vehicle remaining mileage evaluation method.The technical scheme of use is：The evaluation method includes remaining mileage S ' default, unit of account SOC mileage K values and calculates and correct remaining mileage S '.It is unit SOC mileage K values according to previous storage that described remaining mileage S ' is default, is read and the initial total kilometrage information S of registration of vehicle0And SOC0, calculate remaining mileage S ' preset value.Described unit of account SOC driving range K values, it is to read mileage information S values and SOC value by being spaced, the bulk registration Significant Change value of ten times is added and is divided by what is obtained again.The present invention is simple and reliable, can meet basic use demand on the premise of less computing resource is taken, and alerting drivers charge in time, effectively reduce because of the probability that electricity exhausts and casts anchor on the way.

Description

A kind of New-energy electric vehicle remaining mileage evaluation method
Technical field
The invention belongs to electric vehicle engineering field, and in particular to a kind of New-energy electric vehicle remaining mileage estimation side Method.
Background technology
At present, as energy crisis, the getting worse of environmental problem, electric automobile are got over compared to the advantage of conventional internal combustion car More to highlight.And continual mileage is always the key factor for influenceing electric automobile further genralrlization.Continual mileage refers to electronic vapour Car under certain road conditions continuously drives mileage from battery after fully charged.Real-time continual mileage, i.e., current vehicle-loaded battery electricity quantity The distance travelled that can be supported, judgement of the driver to vehicle-state will be directly affected, can be directly connected to vehicle according to driving The person of sailing is expected traveling to destination.
In the existing estimation scheme on real-time continual mileage, the average energy consumption for being mostly based on vehicle is calculated in residue Journey, the continual mileage of current electricity is estimated according to the total electricity of previous traveling consumption and total travel distance, it is this to travel road conditions It is very big with the unified Utopian calculation error of vehicle-state, easily cause driver to judge by accident.In order to improve continual mileage The degree of accuracy of result of calculation, occur by reading battery discharge current, voltage change, real time running distance, other energy The data such as (such as air conditioning energy consumption) or even the lane information of vehicle traveling are consumed, are calculated based on technologies such as average energy consumption modelings in driving Journey, data message is complicated, and amount of calculation is huge.For example, a patent of Application No. 201510716660.4, by reading battery Parameters, calculate the real time electrical quantity value of battery, and average current drain is calculated according to speed and real-time mileage value, and then Calculate continual mileage.The result precision of this calculating is higher, but amount of calculation is also quite big, often relies on corresponding hardware money Source, increase the cost of electric automobile.
The content of the invention
It is an object of the invention to provide a kind of simple and reliable New-energy electric vehicle remaining mileage evaluation method.
For achieving the above object, the technical solution adopted in the present invention is：In a kind of New-energy electric vehicle residue Journey evaluation method, comprises the following steps：
Step 1：Remaining mileage S ' is default：
The unit SOC mileage K values of previous storage are read, K values here refer to, the wheeled when SOC reduces 1% Mileage number, unit SOC is exactly 1% SOC.Read and the initial total kilometrage information S of registration of vehicle0And SOC0, as follows Calculate remaining mileage S ' preset value：
S '=K*SOC0*100；
If the unit SOC mileage K values of previous storage are not present, acquiescence assigns an initial value, according to difference The performance of vehicle, the range set of the initial value is 1~2.5 kilometer.
Step 2：Unit of account SOC mileage K values：
Mileage information S values and SOC value are read in interval, calculate and record the changing value of mileage information S values and SOC value, add up Unit of account SOC driving range K values after ten Significant Change values of record, calculation formula are as follows：
Step 3：Calculate and correct remaining mileage S '：
Judge the state-of-charge of battery, when SOC value is not less than 20%, the K that will be calculated in current SOC value and upper step Value brings following formula into again：
S '=K*SOC*100；
Current residual mileage S ' is calculated, preset value is corrected with this after the detection of larger effective range, described larger have It is 60~300 kilometers to imitate scope.When SOC value is less than 20%, the K values being calculated in current SOC value and upper step are brought into down Formula calculates：
X values in above formula are 0.05~0.15, with result of calculation amendment preset value, institute after the detection of smaller effective range Smaller effective range is stated as 0~60 kilometer.
Preferably：Described read once at intervals of each minute.
Preferably：The Significant Change value is more than 1km for the difference of front and rear total kilometrage twice, and SOC differences are more than 0.4%.
Preferably：Larger effective range described in step 3 is 30~150 kilometers, and smaller effective range is 0~30 public In.
Preferably：Described X values are 0.15.
Preferably：Described unit SOC driving range K values calculated once at interval of renewal in one minute.
Preferably：Described remaining mileage S ' was calculated once at interval of renewal in one minute.
Preferably：After traveling terminates, current K values are stored, vehicle is in lower power mode.
The invention has the advantages that：It is simple and reliable, base can be met on the premise of less computing resource is taken This use demand, and alerting drivers charge in time, effectively reduce because of the probability that electricity exhausts and casts anchor on the way.It is specific next Say, the present invention reads mileage information and SOC value by being spaced, and can accurately estimate the remaining mileage of Current vehicle. The computational methods higher compared to the degree of accuracy in the prior art, the present invention only need to by the Interval mileage difference repeatedly accumulated and SOC differences are homogenized, and calculate unit SOC mileage K values, then K values are multiplied with current SOC value, are greatly reduced Calculate the computing resource shared by remaining mileage.Meanwhile in the state of battery electric quantity is relatively low, reduce the display of remaining mileage Value, the sense of urgency of driver's charging can be strengthened, alerting drivers charge in time, avoid because of the feelings that electricity exhausts and casts anchor on the way Condition occurs.
Brief description of the drawings
Fig. 1 is the flow chart that the present invention calculates remaining mileage.
Embodiment
A kind of New-energy electric vehicle remaining mileage evaluation method as shown in Figure 1, including to remaining mileage S ' it is default, The calculating of unit SOC mileage K values and remaining mileage S ' amendment.The default of remaining mileage S ' mentioned here is basis Previous driving vehicle calculates the K values of storage and current SOC value is estimated to remaining mileage S ', because the present invention is being carried out in residue Journey S ' needs multi collect interval data when estimating, it is necessary to which the acquisition time of at least ten minutes, during this period, can not draw residue Mileage S ' value is simultaneously shown.Therefore, the anticipation first carried out with previous experience to remaining mileage S ', although the knot of anticipation display There is certain error in fruit, but the anticipation value can give the scope of one rough estimate of driver, and then form general traveling road Line plan, avoid just finding that remaining mileage S ' occurs with planning the situation that route differs greatly after travelling ten minutes.
Electricity enters init state on electric automobile whole, reads the K values of previous traveling storage first, and K values here are Refer to, the mileage number of wheeled when SOC reduces 1%, unit SOC is exactly 1% SOC.If the unit SOC of previous storage is feasible Sail mileage K values to be not present, then acquiescence assigns an initial value, and this initial value is according to specific vehicle and the model parameter of battery etc. Information, it is contemplated that its unit SOC mileage K value travelled on common road, typically in the range of 1~2.5 kilometer.On After the completion of electricity, after battery management system and instrument normal work transmission message, start to read vehicle total kilometrage information for the first time S0And SOC0, according to the K values or initial value and current SOC of previous traveling storage0Calculate remaining mileage S ' preset value：
S '=K*SOC0*100
Remaining mileage S ' preset value is shown by instrument, helps driver tentatively to be judged.Then interval is read Take mileage information S values and SOC value, interval time can be one minute, two minutes or longer, but interval time too short can increase It is amount of calculation, long and remaining mileage S ' renewal speed can be caused too slow, influence the degree of accuracy of remaining mileage.Here the interval used Time is one minute, according to the numerical value and previous numerical computations changing value Δ S and Δ SOC read every time, after adding up ten times, according to Equation below calculates：
In order to further improve the degree of accuracy of result of calculation, the changing value used here is Significant Change value, for example, working as When interval time is 1 minute, the difference of front and rear total kilometrage twice is more than changing value of 1km, SOC difference more than 0.4% effectively to become Change value.So the unexpected situations such as temporary parking can be avoided to bring error to remaining mileage S ' calculating.
Before calculating and correcting remaining mileage S ', the state-of-charge of battery is first judged, when SOC value is not less than 20%, Bring the K values being calculated in current SOC value and upper step into following formula again：
S '=K*SOC*100
Current residual mileage S ' is calculated, preset value is corrected with this after the detection of larger effective range.That is, work as When the remaining mileage S ' calculated is fallen in larger limited range, the preset value shown early stage is replaced with the S ' calculated.Here Larger effective range be 60~300, in fact, according to different vehicle and battery size, remaining mileage S ' higher limit model Enclose for 150~300.That is when battery capacity is smaller or vehicle power consumption is larger, remaining mileage S ' larger effective model It can be 30~150 to enclose minimum, and specific scope can be adjusted according to vehicle and battery condition, be can be further assured that and shown Remaining mileage S ' the degree of accuracy.So it is achieved that and accurate result of calculation is obtained by less amount of calculation, it is not necessary to Dependent on other hardware resources, reduce the occupancy to computing resource.
When SOC value is less than 20%, in order to remind driver's current battery charge to be in reduced levels state, it is necessary in time Charging, bring the K values being calculated in current SOC value and upper step into following formula and calculate：
X values in above formula are 0.05~0.15, that is to say, that can set SOC value at 5%~15%, remaining mileage S ' is shown as 0, can so strengthen the sense of urgency of the driver to charging, promotes it to arrange to charge in time as early as possible, avoids because of electricity Exhaust and situation about casting anchor occurs on the way, with result of calculation amendment preset value after the detection of smaller effective range, here compared with Small effective range is 0~60.Likewise, the upper limit of smaller effective range is 30~60, smaller effective range minimum can be 0~ 30.In order to reach preferable warning process, the X values in formula take 0.15, i.e., when SOC value is 15%, remaining mileage S ' is shown as 0.
Further, in order that remaining mileage S ' values can be corrected in time according to road condition change, described unit SOC is feasible Distance K values are sailed to calculate once at interval of renewal in one minute.Meanwhile correspondingly, described remaining mileage S ' at interval of one minute more It is new to calculate once.Remaining mileage S ' is preset when travelling next time for convenience of vehicle, after traveling terminates, stores current K Value, then vehicle is in lower power mode, i.e., before cutting off the electricity supply, the K values being calculated for the last time is stored, so as under The default of remaining mileage S ' can be smoothed out during secondary traveling.

Claims (8)

  1. A kind of 1. New-energy electric vehicle remaining mileage evaluation method, it is characterised in that：Comprise the following steps：
    Step 1：Remaining mileage S ' is default：
    The unit SOC mileage K values of previous storage are read, are read and the initial total kilometrage information S of registration of vehicle0And SOC0, Remaining mileage S ' preset value is calculated as follows：
    S '=K*SOC0*100；
    If the unit SOC mileage K values of previous storage are not present, acquiescence assigns an initial value, the initial value Scope is 1~2.5 kilometer；
    Step 2：Unit of account SOC mileage K values：
    Mileage information S values and SOC value are read in interval, calculate and record the changing value of mileage information S values and SOC value, bulk registration Unit of account SOC driving range K values, calculation formula are as follows after ten Significant Change values：
    <mrow> <mi>K</mi> <mo>=</mo> <mfrac> <mrow> <mo>(</mo> <msub> <mi>&amp;Delta;S</mi> <mn>1</mn> </msub> <mo>+</mo> <msub> <mi>&amp;Delta;S</mi> <mn>2</mn> </msub> <mo>+</mo> <mn>...</mn> <mo>+</mo> <msub> <mi>&amp;Delta;S</mi> <mn>10</mn> </msub> <mo>)</mo> </mrow> <mrow> <mo>(</mo> <msub> <mi>&amp;Delta;SOC</mi> <mn>1</mn> </msub> <mo>+</mo> <mn>...</mn> <mo>+</mo> <msub> <mi>&amp;Delta;SOC</mi> <mn>10</mn> </msub> <mo>)</mo> <mo>*</mo> <mn>100</mn> </mrow> </mfrac> <mo>;</mo> </mrow>
    Step 3：Calculate and correct remaining mileage S '：
    Judge the state-of-charge of battery, when SOC value is not less than 20%, by the K values being calculated in current SOC value and upper step again Bring following formula into：
    S '=K*SOC*100；
    Current residual mileage S ' is calculated, preset value, larger effective model are corrected with this after the detection of larger effective range Enclose for 60~300 kilometers；When SOC value is less than 20%, the K values being calculated in current SOC value and upper step are brought into following formula meter Calculate：
    <mrow> <msup> <mi>S</mi> <mo>,</mo> </msup> <mo>=</mo> <mrow> <mo>(</mo> <mi>S</mi> <mi>O</mi> <mi>C</mi> <mo>-</mo> <mi>X</mi> <mo>)</mo> </mrow> <mo>*</mo> <mi>K</mi> <mo>*</mo> <mfrac> <mrow> <mi>S</mi> <mi>O</mi> <mi>C</mi> <mo>*</mo> <mn>100</mn> </mrow> <mrow> <mn>0.2</mn> <mo>-</mo> <mi>X</mi> </mrow> </mfrac> <mo>;</mo> </mrow>
    X values in above formula are 0.05~0.15, with result of calculation amendment preset value after the detection of smaller effective range, it is described compared with Small effective range is 0~60 kilometer.
  2. 2. New-energy electric vehicle remaining mileage evaluation method according to claim 1, it is characterised in that：Institute in step 2 That states read once at intervals of each minute.
  3. 3. New-energy electric vehicle remaining mileage evaluation method according to claim 2, it is characterised in that：Institute in step 2 The Significant Change value stated is more than 1km for the difference of front and rear total kilometrage twice, and SOC differences are more than 0.4%.
  4. 4. New-energy electric vehicle remaining mileage evaluation method according to claim 1, it is characterised in that：Institute in step 3 The larger effective range stated is 30~150 kilometers, and smaller effective range is 0~30 kilometer.
  5. 5. New-energy electric vehicle remaining mileage evaluation method according to claim 1, it is characterised in that：Institute in step 3 The X values stated are 0.15.
  6. 6. New-energy electric vehicle remaining mileage evaluation method according to claim 2, it is characterised in that：Described unit SOC driving range K values calculated once at interval of renewal in one minute.
  7. 7. New-energy electric vehicle remaining mileage evaluation method according to claim 2, it is characterised in that：Described residue Mileage S ' was calculated once at interval of renewal in one minute.
  8. 8. New-energy electric vehicle remaining mileage evaluation method according to claim 1, it is characterised in that：Terminate in traveling Afterwards, current K values are stored, vehicle is in lower power mode.
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CN109130866A (en) * 2018-08-27 2019-01-04 奇瑞汽车股份有限公司 A kind of new-energy automobile driving data power-on and power-off storage system and control method
CN109489677A (en) * 2018-10-17 2019-03-19 深圳壹账通智能科技有限公司 Electric bicycle route planning method, device, computer equipment and storage medium
CN109532555A (en) * 2018-10-19 2019-03-29 北京经纬恒润科技有限公司 A kind of calculation method and device of course continuation mileage
CN109849734A (en) * 2019-01-23 2019-06-07 江苏敏安电动汽车有限公司 A kind of residual driving range of electromobile algorithm based on user experience
CN110015141A (en) * 2017-12-21 2019-07-16 北京长城华冠汽车科技股份有限公司 A kind of calculation method and equipment of electric car residue course continuation mileage
CN110281812A (en) * 2019-06-27 2019-09-27 一汽解放汽车有限公司 A kind of course continuation mileage estimating system based on operating mode's switch
CN110901468A (en) * 2019-11-26 2020-03-24 神龙汽车有限公司 Method for calculating remaining endurance mileage of electric learner-driven vehicle
CN111376790A (en) * 2018-12-28 2020-07-07 观致汽车有限公司 Method, apparatus, device and medium for determining a mileage of a vehicle
CN111516553A (en) * 2020-04-24 2020-08-11 东风汽车集团有限公司 Method for calculating remaining endurance mileage of pure electric vehicle
CN111591141A (en) * 2020-05-29 2020-08-28 重庆长安新能源汽车科技有限公司 Electric automobile remaining mileage estimation method and device and electric automobile
CN111619356A (en) * 2019-02-28 2020-09-04 北京新能源汽车股份有限公司 Charging control method, device and system and automobile
CN112319307A (en) * 2020-10-30 2021-02-05 东风襄阳旅行车有限公司 K value-based electric automobile driving range estimation method
CN112630667A (en) * 2020-11-30 2021-04-09 合肥国轩高科动力能源有限公司 Estimation method for remaining endurance mileage of new energy electric vehicle
CN112703518A (en) * 2020-07-28 2021-04-23 华为技术有限公司 Remaining mileage prediction method and battery remote service system
CN111196180B (en) * 2018-11-16 2021-09-07 宝沃汽车（中国）有限公司 Vehicle control unit, vehicle and remaining driving range display method and device thereof
CN113656759A (en) * 2021-09-01 2021-11-16 深圳市爱夫卡科技股份有限公司 Method for correcting remaining safe driving distance of new energy automobile
CN114043875A (en) * 2021-11-16 2022-02-15 深圳爱玛智行科技有限公司 Remaining mileage estimation deviation analysis method and system based on big data

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