CN106526494B - The prediction technique and device of power battery service life - Google Patents
The prediction technique and device of power battery service life Download PDFInfo
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- CN106526494B CN106526494B CN201611023055.XA CN201611023055A CN106526494B CN 106526494 B CN106526494 B CN 106526494B CN 201611023055 A CN201611023055 A CN 201611023055A CN 106526494 B CN106526494 B CN 106526494B
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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
- B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- 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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- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides the prediction technique and device of a kind of power battery service life.This method includes, Decay of the power battery under preset each attenuation factor is obtained first, then, obtain Decay of the power battery under preset each attenuation factor, finally, according to the frequency of occurrence of the power battery Decay under each attenuation factor and each attenuation factor, the Decay of the power battery is calculated.The present invention is according to the default running environment of power battery, obtain the Decay of power battery, the standard service life of power battery and Decay are done into subtraction, it can be obtained the service life of power battery, its calculating process is simple, without the power battery of actually detected vehicle, can Accurate Prediction power battery service life.
Description
Technical field
The present invention relates to power battery technology more particularly to a kind of prediction techniques and device of power battery service life.
Background technique
With the gradually decreasing of petroleum resources, the increasingly exacerbation of environmental pollution, electric car has obtained rapid popularization.In electricity
In the development process of electrical automobile, the service life of electric automobile power battery is always the key points and difficulties studied.Wherein, power
The accurate service life of battery can provide the maintenance time of relatively accurate power battery for vehicle factor, so that power electric
Pond is fully utilized.
Currently, the test method of power battery service life is mainly, in vehicle operation, vehicle power electricity is obtained
The charging and discharging currents data in pond are tested according to the cycle life that the charging and discharging currents data do power battery, then by the experiment
Room battery cycle life is converted into the service life of power cell of vehicle.
But the above method can not obtain the service life of power cell of vehicle, also, the above method before vehicle release
Only considered the influence of power battery charge and discharge this factors to power battery service life, without in view of road conditions etc. its
His influence of the factor to power battery service life leads to the service life inaccuracy of the power battery obtained.
Summary of the invention
The present invention provides the prediction technique and device of a kind of power battery service life, dynamic to overcome the prior art to obtain
The problem of the service life inaccuracy of power battery.
In a first aspect, the present invention provides a kind of prediction technique of power battery service life, comprising:
Decay of the power battery under preset each attenuation factor is obtained, preset each attenuation factor is described
When the installation vehicle of power battery is run in default running environment, lead to the factor of the life time decay of the power battery；
According to the frequency of occurrence of the power battery Decay under each attenuation factor and each attenuation factor, meter
Calculate the Decay of the power battery；
According to the Decay of the standard service life of the power battery and the power battery, the power electric is determined
The service life in pond, the power battery include at least one battery cell.
Further, preset each attenuation factor includes one or more of following attenuation factor:
It is the use temperature of the power battery, temperature difference, over-discharge state, overcharge condition, high-multiplying power discharge state, low
Multiplying power charged state, in groups factor and vibrations parameter.
Further, described according to the power battery when preset each attenuation factor includes factor in groups
The Decay of standard service life and the power battery determines the service life of the power battery, comprising:
Determine that the standard of the battery cell makes according to the standard service life of the power battery and the factor in groups
Use the service life；
The service life of the power battery is calculated according to the following formula:
N=N0-N1,
Wherein, the N is the service life of the power battery, the N0The longevity is used for the standard of the battery cell
Life, the N1The Decay of power battery when to consider the factor in groups.
Further, described according to the power battery when preset each attenuation factor does not include factor in groups
Standard service life and the power battery Decay, determine the service life of the power battery, comprising:
The service life of the power battery is calculated according to the following formula:
N=NN-N2,
Wherein, the N is the service life of the power battery, the NNThe longevity is used for the standard of the power battery
Life, the N2The Decay of power battery when not consider the factor in groups.
Further, it when preset each attenuation factor includes factor in groups, is respectively being declined according to the power battery
The frequency of occurrence for subtracting the Decay and each attenuation factor under factor, calculates the Decay of the power battery, comprising:
The Decay of the power battery is calculated according to the following formula:
N1=Σ KInI,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
Further, when preset each attenuation factor does not include factor J in groups, according to the power battery each
The frequency of occurrence of Decay and each attenuation factor under attenuation factor, calculates the Decay of the power battery, packet
It includes:
The Decay of the power battery is calculated according to the following formula:
N2=Σ KInI, I ≠ J,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
Second aspect, the present invention provide a kind of acquisition device of power battery service life, comprising:
Module is obtained, it is described preset each for obtaining Decay of the power battery under preset each attenuation factor
When attenuation factor is that the installation vehicle of the power battery is run in default running environment, lead to the service life of the power battery
The factor of decaying；
Computing module, for according to Decay of the power battery under each attenuation factor and each attenuation factor
Frequency of occurrence, calculate the Decay of the power battery；
Determining module, for according to the standard service life of the power battery and the Decay of the power battery,
Determine the service life of the power battery, the power battery includes at least one battery cell.
Further, preset each attenuation factor includes one or more of following attenuation factor:
It is the use temperature of the power battery, temperature difference, over-discharge state, overcharge condition, high-multiplying power discharge state, low
Multiplying power charged state, in groups factor and vibrations parameter.
Further, when preset each attenuation factor includes factor in groups, the determining module is specifically used for:
Determine that the standard of the battery cell makes according to the standard service life of the power battery and the factor in groups
Use the service life；
The service life of the power battery is calculated according to the following formula:
N=N0-N1,
Wherein, the N is the service life of the power battery, the N0The longevity is used for the standard of the battery cell
Life, the N1The Decay of power battery when to consider the factor in groups.
Further, when preset each attenuation factor does not include factor in groups, the determining module is specifically used for:
The service life of the power battery is calculated according to the following formula:
N=NN-N2,
Wherein, the N is the service life of the power battery, the NNThe longevity is used for the standard of the power battery
Life, the N2The Decay of power battery when not consider the factor in groups.
Further, when preset each attenuation factor includes factor in groups, the computing module is specifically used for:
The Decay of the power battery is calculated according to the following formula:
N1=Σ KInI,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
Further, when preset each attenuation factor does not include factor J in groups, the computing module is specifically used
In:
The Decay of the power battery is calculated according to the following formula:
N2=Σ KInI, I ≠ J,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
The prediction technique and device of power battery service life provided by the invention, firstly, obtaining power battery default
Each attenuation factor under Decay, preset each attenuation factor is to be equipped with the vehicle of the power battery default
When running in running environment, lead to the factor of the life time decay of the power battery.Then, it is respectively being declined according to the power battery
The frequency of occurrence for subtracting the Decay and each attenuation factor under factor, calculates the Decay of the power battery.Then,
According to the Decay of the standard service life of the power battery and the power battery, the use of the power battery is determined
Service life.The technical solution of the present embodiment, according to the default running environment of power battery, obtain power battery each attenuation factor and
The Decay of the frequency of occurrence of each attenuation factor and the corresponding power battery of each attenuation factor, and then obtain power battery
Decay, the standard service life of power battery is subtracted into Decay, can be obtained the service life of power battery,
Calculating process is simple, without the power battery of actually detected vehicle, can Accurate Prediction power battery service life.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the present invention or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention one
A little embodiments for those of ordinary skill in the art without any creative labor, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the flow diagram of the prediction technique embodiment one of power battery service life provided by the invention；
Fig. 2 is the flow diagram of the prediction technique embodiment two of power battery service life provided by the invention；
Fig. 3 is the structural schematic diagram of the prediction meanss embodiment of power battery service life provided by the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Power battery, due to the presence of some inevitable side reactions, can use work in charge and discharge cycles use process
Property substance gradually reduces, and performance is gradually degenerated.Its degree of degeneration aggravates with the increase of charge and discharge cycles number, speed of degenerating
It spends to have with the working condition and environment of power battery charge and discharge and directly contact.
The prediction technique and device of power battery service life provided by the invention, the power electric suitable for any model
Pond obtains the service life of the power battery for the standard service life and Decay according to power battery, calculates
Process is simple, without the power battery of actually detected vehicle, and considers in whole calculating process the influence of the factors such as road conditions,
And then Accurate Prediction goes out the service life of power battery.
In the following, technical solution shown in the application is described in detail by specific embodiment.Under it should be noted that
These specific embodiments of face can be combined with each other, may be in certain embodiments for the same or similar concept or process
It repeats no more.
Fig. 1 is the flow diagram of the prediction technique embodiment one of power battery service life provided by the invention.Such as Fig. 1
Shown, the prediction technique of the service life of the present embodiment power battery may include:
S101, Decay of the power battery under preset each attenuation factor, preset each attenuation factor are obtained
When running in default running environment to be equipped with the vehicle of the power battery, lead to the life time decay of the power battery
Factor.
The executing subject of the present embodiment can be the device for being integrated with the prediction technique, for example, computer, smart phone or
Industrial personal computer etc..
The attenuation factor that power battery service life is influenced in the present embodiment can be use temperature, the temperature of power battery
Difference, over-discharge state, overcharge condition, high-multiplying power discharge state, low range charged state, in groups factor and vibrations parameter etc..
By taking overcharge condition as an example, power battery is general during the charging process to be all accompanied by side reaction, improves charge cutoff
Voltage, the generation of side reaction can be aggravated by even more than being charged after battery electrochemical current potential generally, and battery is caused to use the longevity
Life shortens, and may cause the appearance of the dangerous working conditions such as internal short-circuit of battery damage or even Fire explosion, therefore overcharge can subtract
The service life of few power battery.
It should be noted that user can the decaying according to corresponding to the methods of test acquisition above-mentioned different attenuation factor
Service life.For example, user can obtain power battery when working at a temperature of 40 DEG C, the Decay of power battery, alternatively, dynamic
Ambient temperature locating for power battery is from when changing to -10 DEG C for 30 DEG C, the Decay of power battery.Alternatively, working as power battery mistake
When electric discharge or overcharge, the Decay of power battery.Alternatively, charging in power battery high-multiplying power discharge or high magnification
When, the Decay of power battery, alternatively, the different factors in groups of power battery, to the shadow of the service life of power battery
Loud and vehicle operational process vibration to the pad value etc. of the service life of power battery.
In actual use, power battery A is mounted on vehicle a, and the running environment of vehicle a is it is expected that for example
Train a is run in Pekinese's c route, and the extraneous factors such as Pekinese's environment temperature are it is expected that basic feelings of c route simultaneously
Condition it is also known that, and according to the service condition of power battery, the service condition of power battery A can be set out in advance (i.e. in the past
Overcharge or the frequency of overdischarge etc.), each attenuation factor for the power battery A being mounted on train a can be obtained in this way, into
And the corresponding Decay of each attenuation factor being obtained, such as at 40 DEG C, the Decay of power battery is e1.
S102, occurrence is gone out according to Decay of the power battery under each attenuation factor and each attenuation factor
Number, calculates the Decay of the power battery.
S103, according to the standard service life of the power battery and the Decay of the power battery, determine described in
The service life of power battery.
Specifically, in actual use, according to the default running environment of vehicle, obtain the corresponding each decaying of power battery because
Element, and obtain the frequency of occurrence of above-mentioned each attenuation factor, then, according to Decay of the power battery under each attenuation factor and
The frequency of occurrence of each attenuation factor can be obtained the complete attenuation service life of power battery.Further, according to the standard of power battery
Service life and Decay can be obtained the service life of power battery.
It should be noted that the standard service life of power battery can be obtained from factory data.
Referring to above-mentioned example, it is assumed that the standard service life e0 of power battery when power battery A is mounted on train a, is moved
The number that power battery encounters 40 DEG C of temperature is 3, and number of the temperature lower than -2 DEG C is 5 times, when the number of overcharge is 4 times, it is assumed that
The Decay of 40 DEG C of corresponding power batteries of temperature is e1, and when temperature is lower than -2 DEG C, the Decay of power battery is e2, mistake
Charge corresponding power battery Decay be e3, can predict in this way power battery service life be e0- (3e1+
5e2+3e3)。
The prediction technique of power battery service life provided by the invention respectively declines firstly, obtaining power battery preset
Subtract the Decay under factor, preset each attenuation factor is to be equipped with the vehicle of the power battery in default operation ring
When running in border, lead to the factor of the life time decay of the power battery.Then, according to the power battery in each attenuation factor
Under Decay and each attenuation factor frequency of occurrence, calculate the Decay of the power battery.Then, according to institute
The standard service life of power battery and the Decay of the power battery are stated, determines the service life of the power battery.
The technical solution of the present embodiment obtains each attenuation factor of power battery and respectively declines according to the default running environment of power battery
Subtract the Decay of power battery corresponding to the frequency of occurrence and each attenuation factor of factor, and then obtains power battery
The standard service life of power battery is subtracted Decay, can be obtained the service life of power battery by Decay, meter
Calculation process is simple, without the power battery of actually detected vehicle, can Accurate Prediction power battery service life.
Fig. 2 is the flow diagram of the prediction technique embodiment two of power battery service life provided by the invention, upper
It is above-mentioned according to the power battery when above-mentioned preset each attenuation factor includes factor in groups on the basis of stating embodiment
The Decay of standard service life and the power battery determines the service life of the power battery.As described in Figure 2, on
Stating S103 can specifically include:
S201, the mark that the battery cell is determined according to the standard service life and the factor in groups of the power battery
Quasi- service life.
Specifically, no matter which kind of battery types, the voltage and capacity of battery cell are all unable to satisfy the need of electric car
It asks, it is necessary to which it is that electric motor car or automobile etc. provide energy that power battery (battery pack) is formed by way of series and parallel.Due to
There may be inconsistencies between each battery cell in power battery, in this way in power battery use process, power battery
Maximum available is asynchronous with the active volume decrease speed of battery cell, also leads to the state-of-charge of each battery cell
(State of Charge, abbreviation SOC) state is different.The performance of power battery is simultaneously not equal to each battery cell performance
It is simple to be added, but there are problems that being similar to wooden barrel short -board effect, therefore, battery life has been compared obviously with battery cell
It reduces.The present embodiment will affect the not reciprocity factor of service life between power battery and battery cell and be known as power battery in groups
Factor, the connection relationship in different power batteries between the quantity and battery cell of included battery cell is different, leads
Causing it, factor is also different in groups.
The present embodiment can be obtained the standard of battery cell according to the standard service life of power battery and factor in groups
Service life, for example, the standard service life of power battery and factor does division arithmetic in groups, can be obtained the mark of battery cell
Quasi- service life.
S202, the service life for calculating the power battery according to the following formula:
N=N0-N1
Wherein, the N is the service life of the power battery, the N0The longevity is used for the standard of the battery cell
Life, the N1The Decay of power battery when to consider the factor in groups.
Specifically, above-mentioned S201 calculates the standard service life N for obtaining battery cell0, then, referring to the side of above-mentioned S102
Method obtains the Decay N of power battery1, Decay N1It include the decaying longevity of the corresponding power battery of factor in groups
Life.By the standard service life N of battery cell0With the Decay N of power battery1Subtract each other, can be obtained the use of power battery
Service life.
Further, when preset each attenuation factor includes factor in groups, above-mentioned S102 is according to the power electric
The frequency of occurrence of Decay and each attenuation factor of the pond under each attenuation factor, calculates the decaying longevity of the power battery
Life, can specifically include:
The Decay of the power battery is calculated according to the following formula:
N1=Σ KInI,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
It it should be noted that assume that factor is J in groups, i.e. include factor J, the K in groups in attenuation factor IIMiddle packet
Include the Decay K of the corresponding power battery of factor J in groupsJ。
The prediction technique of power battery service life provided by the invention, by considering the power battery of factor in groups
The standard service life of Decay and battery cell, can be obtained the service life of power battery.
Embodiment two as shown in Figure 2 can be used according to battery list when calculating the service life of power battery in the present invention
The standard service life of body calculates, and optionally, can also be calculated using following example according to battery standard service life.
In another implementation of the invention, on the basis of the above embodiments, when preset each decaying because
Element do not include in groups factor when, then it is above-mentioned according to the standard service life of the power battery and the decaying longevity of the power battery
Life, determines the service life of the power battery.That is, above-mentioned S103 can specifically include:
The service life of the power battery is calculated according to the following formula:
N=NN-N2,
Wherein, the N is the service life of the power battery, the NNThe longevity is used for the standard of the power battery
Life, the N2The Decay of power battery when not consider the factor in groups.
When not considering the factor in groups of power battery, the standard service life and power battery of power battery can be used
Decay calculate the service life of power battery.That is, above-mentioned Decay N2In do not include in groups factor it is corresponding dynamic
The Decay of power battery.
Further, above-mentioned according to the power battery when preset each attenuation factor does not include factor J in groups
The frequency of occurrence of Decay and each attenuation factor under each attenuation factor, calculates the decaying longevity of the power battery
Life, can specifically include:
The Decay of the power battery is calculated according to the following formula:
N2=Σ KInI, I ≠ J,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
It does not include factor J, the K in groups in the attenuation factor I of the present embodimentIIn do not include in groups factor J it is corresponding dynamic
The Decay K of power batteryJ。
The prediction technique of power battery service life provided by the invention, by when not considering factor in groups, power electric
The standard service life in pond and the Decay of power battery, can be obtained the service life of power battery.
Fig. 3 is the structural schematic diagram of the prediction meanss embodiment of power battery service life provided by the invention.The prediction
Device can realize the prediction to power battery service life by way of software, hardware or soft or hard combination.Such as Fig. 3 institute
Show, the prediction meanss of the present embodiment may include:
Module 10 is obtained, it is described preset for obtaining Decay of the power battery under preset each attenuation factor
When each attenuation factor is that the installation vehicle of the power battery is run in default running environment, lead to the longevity of the power battery
Order the factor of decaying；
Computing module 20, for according to Decay of the power battery under each attenuation factor and each decaying because
The frequency of occurrence of element, calculates the Decay of the power battery；
Determining module 30, for according to the standard service life of the power battery and the decaying longevity of the power battery
Life, determines the service life of the power battery, the power battery includes at least one battery cell.
The prediction meanss of power battery service life provided in an embodiment of the present invention, can execute above method embodiment,
That the realization principle and technical effect are similar is similar for it, and details are not described herein.
Optionally, preset each attenuation factor includes one or more of following attenuation factor:
It is the use temperature of the power battery, temperature difference, over-discharge state, overcharge condition, high-multiplying power discharge state, low
Multiplying power charged state, in groups factor and vibrations parameter.
In a kind of feasible implementation of the invention, when preset each attenuation factor includes factor in groups,
The determining module 30 is specifically used for:
Determine that the standard of the battery cell makes according to the standard service life of the power battery and the factor in groups
Use the service life；
The service life of the power battery is calculated according to the following formula:
N=N0-N1,
Wherein, the N is the service life of the power battery, the N0The longevity is used for the standard of the battery cell
Life, the N1The Decay of power battery when to consider the factor in groups.
Further, the computing module 20 is specifically used for calculating the decaying longevity of the power battery according to the following formula
Life:
N1=∑ KInI,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
The prediction meanss of power battery service life provided in an embodiment of the present invention, can execute above method embodiment,
That the realization principle and technical effect are similar is similar for it, and details are not described herein.
In the feasible implementation of another kind of the invention, when preset each attenuation factor does not include factor in groups
When, the determining module 30 is specifically used for:
The service life of the power battery is calculated according to the following formula:
N=NN-N2,
Wherein, the N is the service life of the power battery, the NNThe longevity is used for the standard of the power battery
Life, the N2The Decay of power battery when not consider the factor in groups.
Further, the computing module 20 is specifically used for calculating the decaying longevity of the power battery according to the following formula
Life:
N2=Σ KInI, I ≠ J,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay
The frequency of occurrence of factor I.
The prediction meanss of power battery service life provided in an embodiment of the present invention, can execute above method embodiment,
That the realization principle and technical effect are similar is similar for it, and details are not described herein.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of prediction technique of power battery service life, the power battery include at least one battery cell, feature
It is, comprising:
Decay of the power battery under preset each attenuation factor is obtained, preset each attenuation factor is to install
When stating the vehicle of power battery and running in default running environment, lead to the factor of the life time decay of the power battery；
According to the frequency of occurrence of the power battery Decay under each attenuation factor and each attenuation factor, institute is calculated
State the Decay of power battery；
According to the Decay of the standard service life of the power battery and the power battery, the power battery is determined
Service life；
Preset each attenuation factor includes one or more of following attenuation factor:
Use temperature, temperature difference, over-discharge state, overcharge condition, the high-multiplying power discharge state, low range of the power battery
Charged state, in groups factor and vibrations parameter；
According to the frequency of occurrence of the power battery Decay under each attenuation factor and each attenuation factor, institute is calculated
State the Decay of power battery, comprising:
The Decay of the power battery is calculated according to the following formula:
N1=∑ KInI,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay factor I
Frequency of occurrence.
2. the method according to claim 1, wherein when preset each attenuation factor includes factor in groups
When, it is described according to the standard service life of the power battery and the Decay of the power battery, determine the power electric
The service life in pond, comprising:
Determine that the standard of the battery cell uses the longevity according to the standard service life of the power battery and the factor in groups
Life；
The service life of the power battery is calculated according to the following formula:
N=N0-N1,
Wherein, the N is the service life of the power battery, the N0It is described for the standard service life of the battery cell
N1The Decay of power battery when to consider the factor in groups.
3. the method according to claim 1, wherein when preset each attenuation factor does not include factor in groups
When, it is described according to the standard service life of the power battery and the Decay of the power battery, determine the power electric
The service life in pond, comprising:
The service life of the power battery is calculated according to the following formula:
N=NN-N2,
Wherein, the N is the service life of the power battery, the NNIt is described for the standard service life of the power battery
N2The Decay of power battery when not consider the factor in groups.
4. according to the method described in claim 3, it is characterized in that, when preset each attenuation factor does not include factor in groups
When J, according to the frequency of occurrence of the power battery Decay under each attenuation factor and each attenuation factor, institute is calculated
State the Decay of power battery, comprising:
The Decay of the power battery is calculated according to the following formula:
N2=∑ KInI, I ≠ J,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay factor I
Frequency of occurrence.
5. a kind of acquisition device of power battery service life characterized by comprising
Module is obtained, for obtaining Decay of the power battery under preset each attenuation factor, preset each decaying
When factor is that the installation vehicle of the power battery is run in default running environment, lead to the life time decay of the power battery
Factor；
Computing module, for going out according to Decay of the power battery under each attenuation factor and each attenuation factor
Occurrence number calculates the Decay of the power battery；
Determining module, for determining according to the standard service life of the power battery and the Decay of the power battery
The service life of the power battery, the power battery include at least one battery cell；
Preset each attenuation factor includes one or more of following attenuation factor:
Use temperature, temperature difference, over-discharge state, overcharge condition, the high-multiplying power discharge state, low range of the power battery
Charged state, in groups factor and vibrations parameter；
The computing module, is specifically used for:
The Decay of the power battery is calculated according to the following formula:
N1=∑ KInI,
Wherein, the KIFor the Decay of the power battery described at attenuation factor I, the nIFor the life time decay factor I
Frequency of occurrence.
6. device according to claim 5, which is characterized in that when preset each attenuation factor includes factor in groups
When, the determining module is specifically used for:
Determine that the standard of the battery cell uses the longevity according to the standard service life of the power battery and the factor in groups
Life；
The service life of the power battery is calculated according to the following formula:
N=N0-N1,
Wherein, the N is the service life of the power battery, the N0It is described for the standard service life of the battery cell
N1The Decay of power battery when to consider the factor in groups.
7. device according to claim 5, which is characterized in that when preset each attenuation factor does not include factor in groups
When, the determining module is specifically used for:
The service life of the power battery is calculated according to the following formula:
N=NN-N2,
Wherein, the N is the service life of the power battery, the NNIt is described for the standard service life of the power battery
N2The Decay of power battery when not consider the factor in groups.
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| CN109617167B (en) * | 2018-12-21 | 2021-06-01 | 深圳市道通智能航空技术股份有限公司 | Battery overdischarge warning method and device, battery and aircraft |
| CN111722114B (en) * | 2019-03-18 | 2023-01-20 | 上海汽车集团股份有限公司 | Power battery service life prediction method and system |
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