CN106294943A - The emulation mode of electric automobile continual mileage and device - Google Patents

Abstract

The present invention proposes emulation mode and the device of a kind of electric automobile continual mileage, wherein, the emulation mode of this electric automobile continual mileage, comprising the following steps: obtain the simulation parameter of driving cycle, described simulation parameter includes multiple running time and the multiple speeds of operation the most corresponding with the plurality of running time；The running resistance and operating range that each running time is corresponding is determined with the plurality of speed of operation according to the plurality of running time；Determine the energy requirement of electrokinetic cell that each running time is corresponding with operating range according to running resistance corresponding to each running time；Available power according to described electrokinetic cell, the energy requirement of the electrokinetic cell that each running time is corresponding and operating range determine described electrokinetic cell continual mileage under described driving cycle.Embodiments of the invention, calculate speed fast, and computational accuracy is high, and multiplicity is high, simulation modeling low cost.

Description

The emulation mode of electric automobile continual mileage and device

Technical field

The present invention relates to electric vehicle engineering field, particularly to emulation mode and the dress of a kind of electric automobile continual mileage Put.

Background technology

At present, electric automobile, as a kind of new-energy automobile, is used by increasing crowd.Continual mileage is electricity One important indicator of electrical automobile performance, involve car load dynamical system parameter coupling, for early stage car load design very Crucial.Accordingly, it would be desirable to the continual mileage of electric automobile is carried out simulation calculation, and then provide reference for entire vehicle design.But, mesh The simulation calculation of front continual mileage is carried out mainly for orthodox car, in view of orthodox car and electric automobile operationally can Amount demand difference, current continual mileage carries out emulation mode when being applied to electric automobile, have that computational accuracy is low, result not Problem accurately.

Summary of the invention

It is contemplated that solve above-mentioned technical problem the most to a certain extent.

To this end, the first of the present invention purpose is to propose the emulation mode of a kind of electric automobile continual mileage, calculate speed Degree is fast, and computational accuracy is high, and multiplicity is high, simulation modeling low cost.

Second object of the present invention is to propose the simulator of a kind of electric automobile continual mileage.

For reaching above-mentioned purpose, embodiment proposes the emulation of a kind of electric automobile continual mileage according to a first aspect of the present invention Method, comprises the following steps: obtaining the simulation parameter of driving cycle, described simulation parameter includes multiple running time and with described Multiple speeds of operation that multiple running times are the most corresponding；Determine according to the plurality of running time and the plurality of speed of operation Running resistance that each running time is corresponding and operating range；The running resistance corresponding according to each running time and operating range determine The energy requirement of the electrokinetic cell that each running time is corresponding；Available power according to described electrokinetic cell, each running time pair The energy requirement of the electrokinetic cell answered and operating range determine described electrokinetic cell continual mileage under described driving cycle.

The emulation mode of the electric automobile continual mileage of the embodiment of the present invention, can be according to the running time of driving cycle and right The simulation parameters such as the speed of operation answered determine the running resistance and operating range that each running time is corresponding, and then when determining each traveling Between the energy requirement of corresponding electrokinetic cell, and according to the available power of the electrokinetic cell electrokinetic cell corresponding with each running time Energy requirement calculate continual mileage, in simulation process, the calculating speed of continual mileage is fast, and computational accuracy is high, and multiplicity Height, simulation modeling low cost.

Second aspect present invention embodiment provides the simulator of a kind of electric automobile continual mileage, including: obtain mould Block, for obtaining the simulation parameter of driving cycle, described simulation parameter includes multiple running time and during with the plurality of traveling Between respectively corresponding multiple speeds of operation；First determines module, for according to the plurality of running time and the plurality of traveling Speed determines the running resistance and operating range that each running time is corresponding；Second determines module, for according to each running time pair The running resistance answered determines the energy requirement of the electrokinetic cell that each running time is corresponding with operating range；3rd determines module, uses True in the available power according to described electrokinetic cell, the energy requirement of electrokinetic cell that each running time is corresponding and operating range Fixed described electrokinetic cell continual mileage under described driving cycle.

The simulator of the electric automobile continual mileage of the embodiment of the present invention, can be according to the running time of driving cycle and right The simulation parameters such as the speed of operation answered determine the running resistance and operating range that each running time is corresponding, and then when determining each traveling Between the energy requirement of corresponding electrokinetic cell, and according to the available power of the electrokinetic cell electrokinetic cell corresponding with each running time Energy requirement calculate continual mileage, in simulation process, the calculating speed of continual mileage is fast, and computational accuracy is high, and multiplicity Height, simulation modeling low cost.

The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description Obtain substantially, or recognized by the practice of the present invention.

Accompanying drawing explanation

Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment and will become Substantially with easy to understand, wherein:

Fig. 1 is the flow chart of the emulation mode of the electric automobile continual mileage according to one embodiment of the invention；

Fig. 2 is the structural representation of the simulator of the electric automobile continual mileage according to one embodiment of the invention.

Detailed description of the invention

Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached The embodiment that figure describes is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.

In an embodiment of the present invention, on the premise of road running mode request can being met assuming electric automobile, to electricity In electrical automobile, the performance of all parts emulates.Below with reference to the accompanying drawings electric automobile driving according to embodiments of the present invention is described The emulation mode of mileage and device.

Fig. 1 is the flow chart of the emulation mode of the electric automobile continual mileage according to one embodiment of the invention.

As it is shown in figure 1, the emulation mode of electric automobile continual mileage according to embodiments of the present invention, including:

S101, obtains the simulation parameter of driving cycle, and described simulation parameter includes multiple running time and with the plurality of Multiple speeds of operation that running time is the most corresponding.

Wherein, driving cycle is one group of corresponding relation being made up of running time and travel speed, the shape of this corresponding relation Formula can be relation curve, relation list etc..

In some embodiments of the invention, driving cycle may include but be not limited to: accelerating mode, decelerating mode, at the uniform velocity Operating mode and parking operating mode etc..Running time and the corresponding relation of travel speed are different in different driving cycles.

With the plurality of speed of operation, S102, determines that the traveling that each running time is corresponding hinders according to the plurality of running time Power and operating range.

In one embodiment of the invention, can be according to speed of operation corresponding to each running time, electric automobile self Quality, tire profiles parameter and flow field parameter etc. determine running resistance corresponding to each time.

Wherein, tire profiles parameter can include rolling resistance coefficient, the rolling radius etc. of tire, can be electronic according to the target of emulation The property parameters of automobile directly obtains；Flow field parameter can include front face area, air resistance coefficient etc., can be according to the need in simulation process It is set.

For example, formula (1) can be passed through and determine the running resistance that each running time is corresponding:

$F_t=mgf+\frac{C_{d}A}{21.15}{v_t}^2+\mathrm{\δ}macc---\left(1\right)$

Wherein, F_tBeing running resistance corresponding for running time t, m is the quality of electric automobile, and g is acceleration of gravity, and f is Rolling resistance coefficient, C_dBeing the air resistance coefficient in flow field, A is the front face area in flow field, v_tBeing speed of operation corresponding for running time t, δ is Correction coefficient of rotating mass, acc is the traveling acceleration under this driving cycle.

Wherein, can pass through formula (2) determine traveling acceleration acc:

$acc=\frac{dv}{dt}---\left(2\right)$

In one embodiment of the invention, can be according to initial speed of operation corresponding to initial time, each running time Under corresponding speed of operation and driving cycle, speed determines, with the relation of displacement, the operating range that each running time is corresponding.

For example, at the uniform velocity operating mode, even accelerating mode or even decelerating mode, formula (3) can be passed through and calculate each The operating range that running time is corresponding:

$s_t=\frac{v_0+v_t}{2}t---\left(3\right)$

Wherein, s_tIt is operating range corresponding for running time t, v₀It is that the speed of operation that initial time is corresponding (the most initially travels Speed), v_tIt it is speed of operation corresponding for running time t.

S103, determines, according to running resistance corresponding to each running time, the power current that each running time is corresponding with operating range The energy requirement in pond.

The electric energy of electrokinetic cell is mainly used in as driving motor to power to drive vehicle wheel rotation, and for in automobile Electrical equipment is powered.Therefore, the energy requirement of electrokinetic cell includes driving the of the first energy requirement of motor and electrical equipment Two energy requirements.

Therefore, in one embodiment of the invention, step S103 comprises the steps that the traveling resistance corresponding according to each running time Power determines the first energy requirement driving motor that each running time is corresponding with operating range；According to corresponding auxiliary of each running time Second energy requirement of the electrical equipment that each running time of auxiliary system parameter determination is corresponding；According to described first energy requirement and institute State the energy requirement of the electrokinetic cell that the second energy requirement determines that each running time is corresponding.

It is to say, in each driving cycle, the running resistance of car load can be converted into the first energy of drive electrode Demand.Specifically, can be according to corresponding running resistance, operating range, the transmission efficiency of variator and the driving of each running time The system effectiveness of motor determines the first energy requirement driving motor that each running time is corresponding.Corresponding for each running time Second energy requirement of electrical equipment, can determine according to the low pressure power consumption of aid system and DC/DC efficiency.

For example, formula (4) can be passed through and determine above-mentioned first energy requirement:

$me=\frac{F_t{s}_t}{3600000{\mathrm{\η}}_g{\mathrm{\η}}_{mot}}---\left(4\right)$

And formula (5) can be passed through determine above-mentioned second energy requirement:

$pe=\frac{p_{au}t}{3600{\mathrm{\η}}_p}---\left(5\right)$

Wherein, me is described first energy requirement, F_tIt is running resistance corresponding for running time t, s_tIt it is running time t pair The operating range answered, η_gIt is the transmission efficiency of variator, η_motIt it is the system effectiveness of described driving motor.Pe is described second energy Amount demand, p_auIt is the low pressure power consumption of aid system, η_pIt is the DC/DC efficiency of described aid system.

Thus, the energy requirement of the electrokinetic cell that each running time is corresponding can be as shown in formula (6):

${\mathrm{be}}_t=\frac{F_t{s}_t}{3600000{\mathrm{\η}}_g{\mathrm{\η}}_{mot}}+\frac{p_{au}t}{3600{\mathrm{\η}}_p}---\left(6\right)$

Wherein, be_tIt it is the energy requirement of electrokinetic cell corresponding for running time t.

S104, according to the available power of described electrokinetic cell, the energy requirement of electrokinetic cell that each running time is corresponding Described electrokinetic cell continual mileage under described driving cycle is determined with operating range.

In one embodiment of the invention, can be according to the energy requirement of electrokinetic cell corresponding to individual running time and traveling Distance determines overall energy requirement and the total travel distance of the electrokinetic cell in an Operation mode cycle, then, and can be according to electrokinetic cell Available power determine the continual mileage under this driving cycle.

Specifically, in one embodiment of the invention, step S104 comprises the steps that according to corresponding the moving of each running time The energy requirement of power battery determines the overall energy requirement of the electrokinetic cell that Operation mode cycle is corresponding；According to each running time pair The operating range answered determines the total travel distance that an Operation mode cycle is corresponding；According to described overall energy requirement and total travel distance with And the available power of described electrokinetic cell determines electrokinetic cell continual mileage under described driving cycle.

For example, formula (7) can be passed through and determine electrokinetic cell continual mileage under this driving cycle:

$R=\frac{En}{1000{\mathrm{\Σ}}_t{\mathrm{be}}_t}{\mathrm{\Σ}}_t{s}_t---\left(7\right)$

Wherein, R is the driving under this driving cycle of the electrokinetic cell continual mileage electrokinetic cell under this driving cycle Mileage, En is the available power of electrokinetic cell, ∑_tbe_tIt is the overall energy requirement of the electrokinetic cell that Operation mode cycle is corresponding, ∑_ts_tIt it is the total travel distance that an Operation mode cycle is corresponding.

The emulation mode of the electric automobile continual mileage of the embodiment of the present invention, can be according to the running time of driving cycle and right The simulation parameters such as the speed of operation answered determine the running resistance and operating range that each running time is corresponding, and then when determining each traveling Between the energy requirement of corresponding electrokinetic cell, and according to the available power of the electrokinetic cell electrokinetic cell corresponding with each running time Energy requirement calculate continual mileage, in simulation process, the calculating speed of continual mileage is fast, and computational accuracy is high, and multiplicity Height, simulation modeling low cost.

With the emulation mode embodiment of above-mentioned electric automobile continual mileage, the present invention also proposes in a kind of electric automobile driving The simulator of journey.

Fig. 2 is the structural representation of the simulator of the electric automobile continual mileage according to one embodiment of the invention.

As in figure 2 it is shown, the simulator of electric automobile continual mileage according to embodiments of the present invention, including: acquisition module 10, first determine module 20, second determine that module 30 and the 3rd determines module 40.

Specifically, acquisition module 10 is for obtaining the simulation parameter of driving cycle, and described simulation parameter includes multiple traveling Time and the multiple speeds of operation the most corresponding with the plurality of running time.

Wherein, driving cycle is one group of corresponding relation being made up of running time and travel speed, the shape of this corresponding relation Formula can be relation curve, relation list etc..

In some embodiments of the invention, driving cycle may include but be not limited to: accelerating mode, decelerating mode, at the uniform velocity Operating mode and parking operating mode etc..Running time and the corresponding relation of travel speed are different in different driving cycles.

First determine module 20 for according to the plurality of running time and the plurality of speed of operation determine each travel time Between corresponding running resistance and operating range.

In one embodiment of the invention, first determines that module 20 can be according to Travel vehicle corresponding to each running time Speed, the quality of electric automobile self, tire profiles parameter and flow field parameter etc. determine running resistance corresponding to each time.

Wherein, tire profiles parameter can include rolling resistance coefficient, the rolling radius etc. of tire, can be electronic according to the target of emulation The property parameters of automobile directly obtains；Flow field parameter can include front face area, air resistance coefficient etc., can be according to the need in simulation process It is set.

For example, formula (1) can be passed through and determine the running resistance that each running time is corresponding:

$F_t=mgf+\frac{C_{d}A}{21.15}{v_t}^2+\mathrm{\δ}macc---\left(1\right)$

Wherein, F_tBeing running resistance corresponding for running time t, m is the quality of electric automobile, and g is acceleration of gravity, and f is Rolling resistance coefficient, C_dBeing the air resistance coefficient in flow field, A is the front face area in flow field, v_tBeing speed of operation corresponding for running time t, δ is Correction coefficient of rotating mass, acc is the traveling acceleration under this driving cycle.

Wherein, can pass through formula (2) determine traveling acceleration acc:

$acc=\frac{dv}{dt}---\left(2\right)$

In one embodiment of the invention, first determines that module 20 can be according to initial Travel vehicle corresponding to initial time Under speed of operation that running time fast, each is corresponding and driving cycle, speed determines each running time pair with the relation of displacement The operating range answered.

For example, at the uniform velocity operating mode, even accelerating mode or even decelerating mode, formula (3) can be passed through and calculate each The operating range that running time is corresponding:

$s_t=\frac{v_0+v_t}{2}t---\left(3\right)$

Wherein, s_tIt is operating range corresponding for running time t, v₀It is that the speed of operation that initial time is corresponding (the most initially travels Speed), v_tIt it is speed of operation corresponding for running time t.

Second determines that module 30 is when the running resistance corresponding according to each running time and operating range determine each traveling Between the energy requirement of corresponding electrokinetic cell.

The electric energy of electrokinetic cell is mainly used in as driving motor to power to drive vehicle wheel rotation, and for in automobile Electrical equipment is powered.Therefore, the energy requirement of electrokinetic cell includes driving the of the first energy requirement of motor and electrical equipment Two energy requirements.

Therefore, in one embodiment of the invention, second determines that module 30 can be used for: corresponding according to each running time Running resistance determines the first energy requirement driving motor that each running time is corresponding with operating range；According to each running time pair Second energy requirement of the electrical equipment that each running time of aid system parameter determination answered is corresponding；According to described first energy need The energy requirement of the electrokinetic cell that described second energy requirement of suing for peace determines that each running time is corresponding.

It is to say, in each driving cycle, second determines that the running resistance of car load can be converted into driving by module 30 First energy requirement of electrode.Specifically, second determines that module 30 can be according to running resistance corresponding to each running time, traveling Distance, the transmission efficiency of variator determine the first energy driving motor that each running time is corresponding with the system effectiveness driving motor Amount demand.For the second energy requirement of electrical equipment corresponding to each running time, second determines that module 30 can be according to auxiliary system Low pressure power consumption and the DC/DC efficiency of system determine.

For example, formula (4) can be passed through and determine above-mentioned first energy requirement:

$me=\frac{F_t{s}_t}{3600000{\mathrm{\η}}_g{\mathrm{\η}}_{mot}}---\left(4\right)$

And formula (5) can be passed through determine above-mentioned second energy requirement:

$pe=\frac{p_{au}t}{3600{\mathrm{\η}}_p}---\left(5\right)$

Wherein, me is described first energy requirement, F_tIt is running resistance corresponding for running time t, s_tIt it is running time t pair The operating range answered, η_gIt is the transmission efficiency of variator, η_motIt it is the system effectiveness of described driving motor.Pe is described second energy Amount demand, p_auIt is the low pressure power consumption of aid system, η_pIt is the DC/DC efficiency of described aid system.

Thus, the energy requirement of the electrokinetic cell that each running time is corresponding can be as shown in formula (6):

${\mathrm{be}}_t=\frac{F_t{s}_t}{3600000{\mathrm{\η}}_g{\mathrm{\η}}_{mot}}+\frac{p_{au}t}{3600{\mathrm{\η}}_p}---\left(6\right)$

Wherein, be_tIt it is the energy requirement of electrokinetic cell corresponding for running time t.

3rd determines that module 40 is for the available power according to described electrokinetic cell, power current that each running time is corresponding The energy requirement in pond and operating range determine described electrokinetic cell continual mileage under described driving cycle.

In one embodiment of the invention, the 3rd determines that module 40 can be according to electrokinetic cell corresponding to individual running time Energy requirement and operating range determine overall energy requirement and the total travel distance of the electrokinetic cell in an Operation mode cycle, then, The continual mileage under this driving cycle can be determined according to the available power of electrokinetic cell.

Specifically, in one embodiment of the invention, the 3rd determines that module 40 can be used for: according to each running time pair The energy requirement of the electrokinetic cell answered determines the overall energy requirement of the electrokinetic cell that Operation mode cycle is corresponding；According to each traveling Operating range corresponding to time determines the total travel distance that an Operation mode cycle is corresponding；According to described overall energy requirement and total travel The available power of distance and described electrokinetic cell determines electrokinetic cell continual mileage under described driving cycle.

For example, formula (7) can be passed through and determine electrokinetic cell continual mileage under this driving cycle:

$R=\frac{En}{1000{\mathrm{\Σ}}_t{\mathrm{be}}_t}{\mathrm{\Σ}}_t{s}_t---\left(7\right)$

Wherein, R is the driving under this driving cycle of the electrokinetic cell continual mileage electrokinetic cell under this driving cycle Mileage, En is the available power of electrokinetic cell, ∑_tbe_tIt is the overall energy requirement of the electrokinetic cell that Operation mode cycle is corresponding, ∑_ts_tIt it is the total travel distance that an Operation mode cycle is corresponding.

The simulator of the electric automobile continual mileage of the embodiment of the present invention, can be according to the running time of driving cycle and right The simulation parameters such as the speed of operation answered determine the running resistance and operating range that each running time is corresponding, and then when determining each traveling Between the energy requirement of corresponding electrokinetic cell, and according to the available power of the electrokinetic cell electrokinetic cell corresponding with each running time Energy requirement calculate continual mileage, in simulation process, the calculating speed of continual mileage is fast, and computational accuracy is high, and multiplicity Height, simulation modeling low cost.

Those skilled in the art, after considering description and putting into practice invention disclosed herein, will readily occur to its of the present invention Its embodiment.The application is intended to any modification, purposes or the adaptations of the present invention, these modification, purposes or Person's adaptations is followed the general principle of the present invention and includes the undocumented common knowledge in the art of the disclosure Or conventional techniques means.Description and embodiments is considered only as exemplary, and true scope and spirit of the invention are by following Claim is pointed out.

It should be appreciated that the invention is not limited in precision architecture described above and illustrated in the accompanying drawings, and And various modifications and changes can carried out without departing from the scope.The scope of the present invention is only limited by appended claim.

Claims (10)

1. the emulation mode of an electric automobile continual mileage, it is characterised in that comprise the following steps:

Obtaining the simulation parameter of driving cycle, described simulation parameter includes multiple running time and divides with the plurality of running time Not corresponding multiple speeds of operation；

The running resistance and traveling that each running time is corresponding is determined with the plurality of speed of operation according to the plurality of running time Distance；

Determine the energy of electrokinetic cell that each running time is corresponding with operating range according to running resistance corresponding to each running time Demand；

Available power according to described electrokinetic cell, the energy requirement of the electrokinetic cell that each running time is corresponding and operating range Determine described electrokinetic cell continual mileage under described driving cycle.

2. the method for claim 1, it is characterised in that the described running resistance corresponding according to each running time and traveling Distance determines the energy requirement of the electrokinetic cell that each running time is corresponding, including:

According to running resistance corresponding to each running time determine with operating range each running time corresponding drive the first of motor Energy requirement；

The second energy need according to electrical equipment corresponding to each running time of aid system parameter determination that each running time is corresponding Ask；

Determine the energy of electrokinetic cell that each running time is corresponding with described second energy requirement according to described first energy requirement Demand.

3. method as claimed in claim 2, it is characterised in that wherein,

Described first energy requirement is determined by below equation:

$me=\frac{F_t{s}_t}{3600000{\mathrm{\η}}_g{\mathrm{\η}}_{mot}};$

Described second energy requirement is determined by below equation:

$pe=\frac{p_{au}t}{3600{\mathrm{\η}}_p};$

Wherein, me is described first energy requirement, F_tIt is running resistance corresponding for running time t, s_tIt is that running time t is corresponding Operating range, η_gIt is the transmission efficiency of variator, η_motBeing the system effectiveness of described driving motor, pe is that described second energy needs Ask, p_auIt is the low pressure power consumption of aid system, η_pIt is the DC/DC efficiency of described aid system.

4. the method for claim 1, it is characterised in that the described available power according to described electrokinetic cell, Mei Gehang The energy requirement of the electrokinetic cell that the time of sailing is corresponding and operating range determine described electrokinetic cell continuing under described driving cycle Sail mileage, including:

Energy requirement according to electrokinetic cell corresponding to each running time determines the electrokinetic cell that Operation mode cycle is corresponding Overall energy requirement；

The total travel distance that an Operation mode cycle is corresponding is determined according to the operating range that each running time is corresponding；

Available power according to described overall energy requirement and total travel distance and described electrokinetic cell determines that electrokinetic cell is in institute State the continual mileage under driving cycle.

5. the method for claim 1, it is characterised in that described driving cycle includes accelerating mode, decelerating mode, at the uniform velocity Operating mode and parking operating mode.

6. the simulator of an electric automobile continual mileage, it is characterised in that including:

Acquisition module, for obtaining the simulation parameter of driving cycle, described simulation parameter includes multiple running time and with described Multiple speeds of operation that multiple running times are the most corresponding；

First determines module, for determining that each running time is corresponding according to the plurality of running time with the plurality of speed of operation Running resistance and operating range；

Second determines module, for determining that each running time is corresponding according to the running resistance that each running time is corresponding with operating range The energy requirement of electrokinetic cell；

3rd determines module, for according to the available power of described electrokinetic cell, electrokinetic cell that each running time is corresponding Energy requirement and operating range determine described electrokinetic cell continual mileage under described driving cycle.

7. device as claimed in claim 6, it is characterised in that described second determine module for:

According to running resistance corresponding to each running time determine with operating range each running time corresponding drive the first of motor Energy requirement；

The second energy need according to electrical equipment corresponding to each running time of aid system parameter determination that each running time is corresponding Ask；

Determine the energy of electrokinetic cell that each running time is corresponding with described second energy requirement according to described first energy requirement Demand.

8. device as claimed in claim 7, it is characterised in that wherein,

Described first energy requirement is determined by below equation:

$me=\frac{F_t{s}_t}{3600000{\mathrm{\η}}_g{\mathrm{\η}}_{mot}};$

Described second energy requirement is determined by below equation:

$pe=\frac{p_{au}t}{3600{\mathrm{\η}}_p};$

Wherein, me is described first energy requirement, F_tIt is running resistance corresponding for running time t, s_tIt is that running time t is corresponding Operating range, η_gIt is the transmission efficiency of variator, η_motBeing the system effectiveness of described driving motor, pe is that described second energy needs Ask, p_auIt is the low pressure power consumption of aid system, η_pIt is the DC/DC efficiency of described aid system.

9. device as claimed in claim 6, it is characterised in that the described 3rd determine module for:

Energy requirement according to electrokinetic cell corresponding to each running time determines the electrokinetic cell that Operation mode cycle is corresponding Overall energy requirement；

The total travel distance that an Operation mode cycle is corresponding is determined according to the operating range that each running time is corresponding；

Available power according to described overall energy requirement and total travel distance and described electrokinetic cell determines that electrokinetic cell is in institute State the continual mileage under driving cycle.

10. device as claimed in claim 6, it is characterised in that described driving cycle includes accelerating mode, decelerating mode, even Speed operating mode and parking operating mode.