CN110412471A - A kind of construction method of Li-ion batteries piles composite electrochemical polarization model - Google Patents
A kind of construction method of Li-ion batteries piles composite electrochemical polarization model Download PDFInfo
- Publication number
- CN110412471A CN110412471A CN201910727790.6A CN201910727790A CN110412471A CN 110412471 A CN110412471 A CN 110412471A CN 201910727790 A CN201910727790 A CN 201910727790A CN 110412471 A CN110412471 A CN 110412471A
- Authority
- CN
- China
- Prior art keywords
- formula
- ion batteries
- batteries piles
- equivalent
- moment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
-
- 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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The invention discloses a kind of construction methods of Li-ion batteries piles composite electrochemical polarization model, comprising: S1 establishes the equivalent-circuit model of Li-ion batteries piles；S2 is based on Kirchhoff's laws of electric circuit, constructs the state space equation formula of the equivalent-circuit model；S3 calculates Li-ion batteries piles in the closed circuit voltage U at k moment according to the state space equation formula of the equivalent-circuit modelL(k) discrete formula；S4 solves Li-ion batteries piles in the closed circuit voltage U at k moment using least square methodL(k) parameter for needing to recognize in discrete formula.The present invention realizes the accurate description of Li-ion batteries piles working condition in conjunction with the advantages of different equivalent circuit model by comprehensively considering characterization accuracy and computation complexity.
Description
Technical field
The present invention relates to the state of charge estimating techniques field of Li-ion batteries piles, especially a kind of Li-ion batteries piles are multiple
Close the construction method of activation polarization model.
Background technique
Electrokinetic cell system be in one of most important component part, it is very big to overall performance and safety effects, lithium from
Sub- battery relies on excellent performance, becomes the most commonly used machine power battery of current application；For lithium ion battery, no
Only need to continually look for the core material of function admirable, it is also necessary to battery management system (Battery Management
System, BMS) it is managed, to prevent the hair of the dangerous situations such as lithium ion battery spontaneous combustion, self-destruction under certain limiting conditions
It is raw；State-of-charge (State of Charge, the SOC) estimation of battery is the basis of BMS, and estimated accuracy is to judge cell tube
The important evidence of reason system superiority and inferiority, accurate SOC estimation are conducive to abundant, the reasonable employment of battery, extend the service life of battery, and
Improve the safety of battery；Accurate Li-ion battery model is the premise for improving SOC estimation precision, therefore, battery model
Accurate establish is the key that battery management system；Battery is a nonlinear system, and common battery model can be divided into electrification
Model and two kinds of equivalent-circuit model are learned, electrochemical model is modeled according to electrochemical reaction mechanism, is retouched by mathematical relationship
It states inside battery and acts through pure mathematics and describe the internal action of battery to fully describe the characteristic of battery, but traditional pure electrification
Learn the dynamic property that model is difficult simulated battery；Equivalent-circuit model utilizes electricity according to the dynamic characteristic and working principle of battery
Resistance, capacitor and voltage source built-up circuit network, establish equivalent-circuit model；However, for most of equivalent-circuit models, open circuit
Voltage (OCV) is direct measurement or the several specified SOC values for measuring estimation in an experiment, therefore in equivalent-circuit model, it is single
Pure is not only time-consuming and laborious as the function of SOC using OCV, or even is easy error；What is worse, OCV is discrete on multiple SOC
Indicate not intuitive for Kalman filtering or SOC estimation technique based on Kalman filtering.
Summary of the invention
The technical problems to be solved by the present invention are: causing for existing Li-ion battery model because precision is inadequate
The problem of SOC value cannot be estimated accurately provides a kind of construction method of Li-ion batteries piles composite electrochemical polarization model.
The technical solution adopted by the invention is as follows:
A kind of construction method of Li-ion batteries piles composite electrochemical polarization model, comprising:
S1 establishes the equivalent-circuit model of Li-ion batteries piles；
S2 is based on Kirchhoff's laws of electric circuit, constructs the state space equation formula of the equivalent-circuit model；
S3, according to the state space equation formula of the equivalent-circuit model, calculating Li-ion batteries piles are closed circuit the k moment
Voltage UL(k) discrete formula；
S4 solves Li-ion batteries piles in the closed circuit voltage U at k moment using least square methodL(k) it is needed in discrete formula
The parameter to be recognized calculates the state space equation formula of the equivalent-circuit model using the parameter that the needs that solution obtains recognize
In parameter, obtain Li-ion batteries piles composite electrochemical polarization model.
Further, the composition of the equivalent-circuit model are as follows: polarization resistance RPWith polarization capacity CPConstitute single order RC electricity
Road；Internal charging resistance RcWith electric discharge internal resistance RdDifferential concatenation diode D respectivelycWith diode DdIt is in parallel afterwards, then it is sequentially connected in series single order RC
The open-circuit voltage U of circuit, ohmic internal resistance Ro and Li-ion batteries pilesOC；The closed circuit voltage of the equivalent-circuit model is UL。
Further, the S2 is based on Kirchhoff's laws of electric circuit, constructs the state space side of the equivalent-circuit model
Formula are as follows:
In formula, R0For the ohmic internal resistance of Li-ion batteries piles；RPFor the polarization resistance of Li-ion batteries piles；CPFor lithium ion
The polarization capacity of battery pack；RcdFor the charge and discharge internal resistance of Li-ion batteries piles, the R in chargingcd=Rc, the R in electric dischargecd=Rd；k
At the time of locating for the SOC estimation of Li-ion batteries piles；ULIt (k) is closed circuit voltage of the Li-ion batteries piles at the k moment；IL(k) it is
Output electric current of the Li-ion batteries piles at the k moment；UPIt (k) is polarization resistance RPVoltage of the both ends at the k moment；Li-ion batteries piles
Open-circuit voltage UOCEquivalent, K is carried out by Nernst model1、K2、K3For three constants selected by Nernst model, SOC (k) is
SOC estimated value of the Li-ion batteries piles at the k moment；
Further, in the step S3, according to the state space equation formula of the equivalent-circuit model, lithium ion is calculated
Closed circuit voltage U of the battery pack at the k momentL(k) process of discrete formula are as follows:
S3-1, by polarization resistance R in state space equation formulaPVoltage U of the both ends at the k momentP(k) differential formula, with one
Rank backward difference replaces, and obtains UP(k) the equivalent differential formula of discretization:
In formula, UP(k) and UPIt (k-1) is respectively polarization resistance RPVoltage of the both ends at k moment and k-1 moment, T be lithium from
Sub- battery parameter detection cycle, that is, signal sampling time interval；
S3-2, in conjunction with equivalent UP(k) differential formula and UP(k) the equivalent differential formulas of discretization, obtains polarization resistance
RPVoltage U of the both ends at the k momentP(k) discrete formula:
In formula, IL(k) and ILIt (k-1) is respectively output electric current of the Li-ion batteries piles at k moment and k-1 moment；
S3-3, by polarization resistance RPVoltage U of the both ends at the k momentP(k) discrete type filial generation enters the state space equation
Formula obtains Li-ion batteries piles in the closed circuit voltage U at k momentL(k) discrete formula:
UL(k)=a1+a2UL(k-1)+a3ln(SOC(k))+a4ln(1-SOC(k))+a5IL(k)+a6IL(k-1)
In formula, the parameter a that needs to recognize1、a2、a3、a4、a5、a6Expanded form it is as follows:
Further, in the step S4, Li-ion batteries piles are solved in the closed circuit voltage at k moment using least square method
UL(k) parameter for needing to recognize in discrete formula calculates the equivalent circuit using the parameter that obtained needs recognize is solved
Parameter in the state space equation formula of model, obtains the process of Li-ion batteries piles composite electrochemical polarization model are as follows:
S4-1, by Li-ion batteries piles the k moment closed circuit voltage UL(k) discrete formula regard as one by independent variable and
Six element sets of dependent variable composition, include N number of unit in each element, N=1,2,3 ..., k:
{UL(k)UL(k-1)SOC(k)SOC(k-1)IL(k)IL(k-1)}
Wherein, the matrix of dependent variable are as follows: Y=[UL(1)UL(2)…UL(N)]T；The matrix of independent variable are as follows: X=[β (1) β
(2)…β(N)]T；
S4-2, according to UL(k) discrete formula can obtain:
β (k)=[1UL(k-1)ln(SOC(k))ln(1-SOC(k))IL(k)IL(k-1)]
The then parameter matrix of identification in need: A=[a1a2a3a4a5a6]T；
S4-3 is estimated using least square method, solves the parameter matrix A=(X for needing to recognizeTX)-1XTY=X-1Y, can be with
Obtain the parameter a for needing to recognize1、a2、a3、a4、a5、a6；
S4-4, the parameter a recognized as needed1、a2、a3、a4、a5、a6Expanded form further deform and obtain equivalent electricity
Parameter in the state space equation formula of road model calculates formula:
The parameter a that the needs that solution obtains are recognized1、a2、a3、a4、a5、a6The state for substituting into the equivalent-circuit model is empty
Between parameter in equation calculate formula, calculated result is substituted into the state space equation formula of equivalent-circuit model, obtains lithium
Ion battery group composite electrochemical polarization model.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
The present invention comprehensively considers characterization accuracy and the computation complexity of Li-ion batteries piles, in conjunction with different equivalent circuit mould
The advantages of type, is proposed using mode of the electrochemistry in conjunction with equivalent circuit and constructs the polarization of Li-ion batteries piles composite electrochemical
Model；The Li-ion batteries piles composite electrochemical polarization model proposed by inside cascade Li-ion batteries piles in groups not
With the simulation of effect, the accurate mathematical expression of Li-ion batteries piles operating condition and the course of work is realized；And it gives based on lithium ion
The lithium ion battery parameter identification method based on least square method of battery pack composite electrochemical polarization model；For electrochemical model
Beneficial reference and reference are provided with use in conjunction of the equivalent-circuit model in battery management.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the flow diagram of the construction method of Li-ion batteries piles composite electrochemical polarization model of the invention.
Fig. 2 is the equivalent-circuit model schematic diagram of Li-ion batteries piles of the invention.
Specific embodiment
Feature and performance of the invention are described in further detail with reference to embodiments.
A kind of Li-ion batteries piles composite electrochemical polarization model (Splice- provided in this embodiment
Electrochemical Polarization Model, S-EPM model) construction method, as shown in Figure 1, comprising:
S1 establishes the equivalent-circuit model of Li-ion batteries piles；As shown in Fig. 2, the composition of the equivalent-circuit model are as follows:
Polarization resistance RPWith polarization capacity CPConstitute First-order Rc Circuit；Internal charging resistance RcWith electric discharge internal resistance RdDifferential concatenation diode D respectivelyc
With diode DdIt is in parallel afterwards, then it is sequentially connected in series the open-circuit voltage U of First-order Rc Circuit, ohmic internal resistance Ro and Li-ion batteries pilesOC；It should
The closed circuit voltage of equivalent-circuit model is UL。
S2 is based on Kirchhoff's laws of electric circuit, constructs the state space equation formula of the equivalent-circuit model:
In formula, R0For the ohmic internal resistance of Li-ion batteries piles, Li-ion batteries piles can be characterized in charge and discharge process Central Europe
Positive and negative end voltage drop caused by nurse effect；RPFor the polarization resistance of Li-ion batteries piles, CPFor the polarization of Li-ion batteries piles
Capacitor, RPAnd CPRelaxation effect in the First-order Rc Circuit characterization Li-ion batteries piles charge and discharge process of composition, and then realize to lithium
The expression of ion battery group transient response；RcdFor the charge and discharge internal resistance of Li-ion batteries piles, the R in chargingcd=Rc, in electric discharge
Rcd=Rd；At the time of k is that the SOC estimation of Li-ion batteries piles is locating；ULIt (k) is closed circuit electricity of the Li-ion batteries piles at the k moment
Pressure；ILIt (k) is output electric current of the Li-ion batteries piles at the k moment；UPIt (k) is polarization resistance RPVoltage of the both ends at the k moment；Lithium
The open-circuit voltage U of ion battery groupOCEquivalent by the progress of Nernst model, Nernst model can be in the entire of Li-ion batteries piles
Preferable fitting effect, K are provided in charge and discharge process1、K2、K3For three constants selected by Nernst model, can by lithium from
Sub- battery pack works present particular job situation in groups, passes through various combination test and determines；SOC (k) is lithium ion battery
SOC estimated value of the group at the k moment.
S3, according to the state space equation formula of the equivalent-circuit model, calculating Li-ion batteries piles are closed circuit the k moment
Voltage UL(k) discrete formula；
S3-1, by polarization resistance R in state space equation formulaPVoltage U of the both ends at the k momentP(k) differential formula, with one
Rank backward difference replaces, and obtains UP(k) the equivalent differential formula of discretization:
In formula, UP(k) and UPIt (k-1) is respectively polarization resistance RPVoltage of the both ends at k moment and k-1 moment, T be lithium from
Sub- battery parameter detection cycle, that is, signal sampling time interval；
S3-2, in conjunction with equivalent UP(k) differential formula and UP(k) the equivalent differential formulas of discretization, obtains polarization resistance
RPVoltage U of the both ends at the k momentP(k) discrete formula:
In formula, IL(k) and ILIt (k-1) is respectively output electric current of the Li-ion batteries piles at k moment and k-1 moment；
S3-3, by polarization resistance RPVoltage U of the both ends at the k momentP(k) discrete type filial generation enters the state space equation
Formula obtains Li-ion batteries piles in the closed circuit voltage U at k momentL(k) discrete formula:
UL(k)=a1+a2UL(k-1)+a3ln(SOC(k))+a4ln(1-SOC(k))+a5IL(k)+a6IL(k-1)
In formula, the parameter a that needs to recognize1、a2、a3、a4、a5、a6Expanded form it is as follows:
S4 solves Li-ion batteries piles in the closed circuit voltage U at k moment using least square methodL(k) it is needed in discrete formula
The parameter to be recognized calculates the state space equation formula of the equivalent-circuit model using the parameter that the needs that solution obtains recognize
In parameter, obtain Li-ion batteries piles composite electrochemical polarization model:
S4-1, by Li-ion batteries piles the k moment closed circuit voltage UL(k) discrete formula regard as one by independent variable and
Six element sets of dependent variable composition, include N number of unit in each element, N=1,2,3 ..., k:
{UL(k)UL(k-1)SOC(k)SOC(k-1)IL(k)IL(k-1)}
Wherein, the matrix of dependent variable are as follows: Y=[UL(1)UL(2)…UL(N)]T；The matrix of independent variable are as follows: X=[β (1) β
(2)…β(N)]T；
S4-2, according to UL(k) discrete formula can obtain:
β (k)=[1UL(k-1)ln(SOC(k))ln(1-SOC(k))IL(k)IL(k-1)]
The then parameter matrix of identification in need: A=[a1a2a3a4a5a6]T；
S4-3 is estimated using least square method, solves the parameter matrix A=(X for needing to recognizeTX)-1XTY=X-1Y, can be with
Obtain the parameter a for needing to recognize1、a2、a3、a4、a5、a6；
S4-4, the parameter a recognized as needed1、a2、a3、a4、a5、a6Expanded form further deform and obtain equivalent electricity
Parameter in the state space equation formula of road model calculates formula:
The parameter a that the needs that solution obtains are recognized1、a2、a3、a4、a5、a6The state for substituting into the equivalent-circuit model is empty
Between parameter in equation calculate formula, calculated result is substituted into the state space equation formula of equivalent-circuit model, obtains lithium
Ion battery group composite electrochemical polarization model.
In conclusion the present invention comprehensively considers characterization accuracy and the computation complexity of Li-ion batteries piles, in conjunction with difference
The advantages of equivalent-circuit model, is proposed using mode of the electrochemistry in conjunction with equivalent circuit and to construct Li-ion batteries piles compound
Activation polarization model；The Li-ion batteries piles composite electrochemical polarization model proposed passes through to cascade lithium-ion electric in groups
The simulation of different effect inside the group of pond, realizes the accurate mathematical expression of Li-ion batteries piles operating condition and the course of work, by experiment
Show can by control errors 0.5% within, precision is higher；And it gives based on Li-ion batteries piles composite electrochemical pole
Change the lithium ion battery parameter identification method based on least square method of model；It is electrochemical model and equivalent-circuit model in electricity
Use in conjunction in the management of pond provides beneficial reference and reference.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of construction method of Li-ion batteries piles composite electrochemical polarization model characterized by comprising
S1 establishes the equivalent-circuit model of Li-ion batteries piles；
S2 is based on Kirchhoff's laws of electric circuit, constructs the state space equation formula of the equivalent-circuit model；
S3 calculates Li-ion batteries piles in the closed circuit voltage at k moment according to the state space equation formula of the equivalent-circuit model
UL(k) discrete formula；
S4 solves Li-ion batteries piles in the closed circuit voltage U at k moment using least square methodL(k) it needs to distinguish in discrete formula
The parameter of knowledge is calculated in the state space equation formula of the equivalent-circuit model using the parameter that obtained needs recognize is solved
Parameter obtains Li-ion batteries piles composite electrochemical polarization model.
2. the construction method of Li-ion batteries piles composite electrochemical polarization model according to claim 1, which is characterized in that
The composition of the equivalent-circuit model are as follows: polarization resistance RPWith polarization capacity CPConstitute First-order Rc Circuit；Internal charging resistance RcAnd electric discharge
Internal resistance RdDifferential concatenation diode D respectivelycWith diode DdIt is in parallel afterwards, then it is sequentially connected in series First-order Rc Circuit, ohmic internal resistance Ro and lithium
The open-circuit voltage U of ion battery groupOC；The closed circuit voltage of the equivalent-circuit model is UL。
3. the construction method of Li-ion batteries piles composite electrochemical polarization model according to claim 2, which is characterized in that
The S2 is based on Kirchhoff's laws of electric circuit, constructs the state space equation formula of the equivalent-circuit model are as follows:
In formula, R0For the ohmic internal resistance of Li-ion batteries piles；RPFor the polarization resistance of Li-ion batteries piles；CPFor lithium ion battery
The polarization capacity of group；RcdFor the charge and discharge internal resistance of Li-ion batteries piles, the R in chargingcd=Rc, the R in electric dischargecd=Rd；K is lithium
At the time of the SOC estimation of ion battery group is locating；ULIt (k) is closed circuit voltage of the Li-ion batteries piles at the k moment；IL(k) for lithium from
Output electric current of the sub- battery pack at the k moment；UPIt (k) is polarization resistance RPVoltage of the both ends at the k moment；Li-ion batteries piles are opened
Road voltage UOCEquivalent, K is carried out by Nernst model1、K2、K3For three constants selected by Nernst model, SOC (k) be lithium from
SOC estimated value of the sub- battery pack at the k moment.
4. the construction method of Li-ion batteries piles composite electrochemical polarization model according to claim 3, which is characterized in that
In the step S3, according to the state space equation formula of the equivalent-circuit model, Li-ion batteries piles closing at the k moment is calculated
Road voltage UL(k) process of discrete formula are as follows:
S3-1, by polarization resistance R in state space equation formulaPVoltage U of the both ends at the k momentP(k) differential formula, with single order to
Difference replaces afterwards, obtains UP(k) the equivalent differential formula of discretization:
In formula, UP(k) and UPIt (k-1) is respectively polarization resistance RPVoltage of the both ends at k moment and k-1 moment, T are lithium-ion electric
Pond group parameter detecting period, that is, signal sampling time interval；
S3-2, in conjunction with equivalent UP(k) differential formula and UP(k) the equivalent differential formulas of discretization, obtains polarization resistance RPTwo
Hold the voltage U at the k momentP(k) discrete formula:
In formula, IL(k) and ILIt (k-1) is respectively output electric current of the Li-ion batteries piles at k moment and k-1 moment；
S3-3, by polarization resistance RPVoltage U of the both ends at the k momentP(k) discrete type filial generation enters the state space equation formula, obtains
To Li-ion batteries piles the k moment closed circuit voltage UL(k) discrete formula:
UL(k)=a1+a2UL(k-1)+a3ln(SOC(k))+a4ln(1-SOC(k))+a5IL(k)+a6IL(k-1)
In formula, the parameter a that needs to recognize1、a2、a3、a4、a5、a6Expanded form it is as follows:
5. the construction method of Li-ion batteries piles composite electrochemical polarization model according to claim 4, which is characterized in that
In the step S4, Li-ion batteries piles are solved in the closed circuit voltage U at k moment using least square methodL(k) in discrete formula
The parameter for needing to recognize calculates the state space equation of the equivalent-circuit model using the parameter that the needs that solution obtains recognize
Parameter in formula obtains the process of Li-ion batteries piles composite electrochemical polarization model are as follows:
S4-1, by Li-ion batteries piles the k moment closed circuit voltage UL(k) discrete formula regards one as by independent variable and because becoming
Six element sets for measuring composition, include N number of unit in each element, N=1,2,3 ..., k:
{UL(k)UL(k-1)SOC(k)SOC(k-1)IL(k)IL(k-1)}
Wherein, the matrix of dependent variable are as follows: Y=[UL(1) UL(2) … UL(N)]T；The matrix of independent variable are as follows: X=[β (1) β (2)
… β(N)]T；
S4-2, according to UL(k) discrete formula can obtain:
β (k)=[1UL(k-1) ln(SOC(k)) ln(1-SOC(k))IL(k)IL(k-1)]
The then parameter matrix of identification in need: A=[a1a2a3a4a5a6]T；
S4-3 is estimated using least square method, solves the parameter matrix A=(X for needing to recognizeTX)-1XTY=X-1Y, it is available
The parameter a for needing to recognize1、a2、a3、a4、a5、a6；
S4-4, the parameter a recognized as needed1、a2、a3、a4、a5、a6Expanded form further deform and obtain equivalent circuit mould
Parameter in the state space equation formula of type calculates formula:
The parameter a that the needs that solution obtains are recognized1、a2、a3、a4、a5、a6Substitute into the state space side of the equivalent-circuit model
Parameter in formula calculates formula, calculated result is substituted into the state space equation formula of equivalent-circuit model, obtains lithium ion
Battery pack composite electrochemical polarization model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910727790.6A CN110412471B (en) | 2019-08-08 | 2019-08-08 | Construction method of composite electrochemical polarization model of lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910727790.6A CN110412471B (en) | 2019-08-08 | 2019-08-08 | Construction method of composite electrochemical polarization model of lithium ion battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110412471A true CN110412471A (en) | 2019-11-05 |
| CN110412471B CN110412471B (en) | 2021-03-12 |
Family
ID=68366715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910727790.6A Active CN110412471B (en) | 2019-08-08 | 2019-08-08 | Construction method of composite electrochemical polarization model of lithium ion battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110412471B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208435A (en) * | 2020-01-16 | 2020-05-29 | 北方工业大学 | Battery model parameter estimation method and device |
| CN112733479A (en) * | 2020-12-29 | 2021-04-30 | 华人运通(江苏)技术有限公司 | Method, device and medium for calculating model parameters of single battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020120906A1 (en) * | 2000-07-17 | 2002-08-29 | Lei Xia | Behavioral modeling and analysis of galvanic devices |
| CN104392080A (en) * | 2014-12-19 | 2015-03-04 | 山东大学 | Lithium-battery variable fractional order and equivalent circuit model and identification method thereof |
| US20190187212A1 (en) * | 2016-11-21 | 2019-06-20 | Battelle Energy Alliance, Llc | Systems and methods for estimation and prediction of battery health and performance |
| CN110007236A (en) * | 2019-04-19 | 2019-07-12 | 中国计量大学 | A kind of parameter identification method of aluminium-air cell equivalent-circuit model |
| CN110058161A (en) * | 2019-05-20 | 2019-07-26 | 山东大学 | A kind of distributed discrimination method and device of Li-ion battery model parameter |
| CN110082684A (en) * | 2019-05-13 | 2019-08-02 | 南京邮电大学 | A kind of lithium battery SOC estimation method based on the more new breath Extended Kalman filter of weighting |
-
2019
- 2019-08-08 CN CN201910727790.6A patent/CN110412471B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020120906A1 (en) * | 2000-07-17 | 2002-08-29 | Lei Xia | Behavioral modeling and analysis of galvanic devices |
| CN104392080A (en) * | 2014-12-19 | 2015-03-04 | 山东大学 | Lithium-battery variable fractional order and equivalent circuit model and identification method thereof |
| US20190187212A1 (en) * | 2016-11-21 | 2019-06-20 | Battelle Energy Alliance, Llc | Systems and methods for estimation and prediction of battery health and performance |
| CN110007236A (en) * | 2019-04-19 | 2019-07-12 | 中国计量大学 | A kind of parameter identification method of aluminium-air cell equivalent-circuit model |
| CN110082684A (en) * | 2019-05-13 | 2019-08-02 | 南京邮电大学 | A kind of lithium battery SOC estimation method based on the more new breath Extended Kalman filter of weighting |
| CN110058161A (en) * | 2019-05-20 | 2019-07-26 | 山东大学 | A kind of distributed discrimination method and device of Li-ion battery model parameter |
Non-Patent Citations (2)
| Title |
|---|
| JIANCHAO LI等: "The battery management system construction method study for the power lithium-ion battery pack", 《IEEE》 * |
| 王露等: "锂离子电池等效模型建立与参数辨识方法研究", 《元器件》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208435A (en) * | 2020-01-16 | 2020-05-29 | 北方工业大学 | Battery model parameter estimation method and device |
| CN112733479A (en) * | 2020-12-29 | 2021-04-30 | 华人运通(江苏)技术有限公司 | Method, device and medium for calculating model parameters of single battery |
| CN112733479B (en) * | 2020-12-29 | 2023-06-13 | 华人运通(江苏)技术有限公司 | Model parameter calculation method, device and medium for single battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110412471B (en) | 2021-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | On-board diagnosis of soft short circuit fault in lithium-ion battery packs for electric vehicles using an extended Kalman filter | |
| Jiaqiang et al. | Effects analysis on active equalization control of lithium-ion batteries based on intelligent estimation of the state-of-charge | |
| Cittanti et al. | Modeling Li-ion batteries for automotive application: A trade-off between accuracy and complexity | |
| CN103197251B (en) | A kind of discrimination method of dynamic lithium battery Order RC equivalent model | |
| CN104678316A (en) | Method and device for estimating charge state of lithium ion battery | |
| CN106443459A (en) | Evaluation method of state of charge of vehicle lithium ion power battery | |
| Nemes et al. | Parameters identification using experimental measurements for equivalent circuit Lithium-Ion cell models | |
| CN103744026A (en) | Storage battery state of charge estimation method based on self-adaptive unscented Kalman filtering | |
| CN103926538A (en) | Variable tap-length RC equivalent circuit model and realization method based on AIC | |
| CN103217651B (en) | A kind of evaluation method of storage battery charge state and system | |
| CN110133505A (en) | A kind of power battery charging and discharging state observation method based on variable parameter model | |
| CN106872899A (en) | A kind of electrokinetic cell SOC methods of estimation based on reduced dimension observer | |
| CN105116346A (en) | Series-connected battery system and method for estimating state of charge thereof | |
| Tanaka et al. | Accurate and versatile simulation of transient voltage profile of lithium-ion secondary battery employing internal equivalent electric circuit | |
| Zhou et al. | Online State of Health Estimation for Series-Connected LiFePO₄ Battery Pack Based on Differential Voltage and Inconsistency Analysis | |
| Wei et al. | State-of-charge estimation for lithium-ion batteries based on temperature-based fractional-order model and dual fractional-order kalman filter | |
| CN102221678A (en) | On-line life calculation method for battery system | |
| CN105116338A (en) | Parallel type battery system modeling method based on SOC compensator | |
| Wang et al. | Impact of individual cell parameter difference on the performance of series–parallel battery packs | |
| Boulmrharj et al. | Towards a battery characterization methodology for performance evaluation of micro-grid systems | |
| CN110412471A (en) | A kind of construction method of Li-ion batteries piles composite electrochemical polarization model | |
| CN113156316A (en) | Estimation algorithm for SOC of brine battery | |
| Xiong et al. | State of charge estimation based on sliding mode observer for vanadium redox flow battery | |
| Wang et al. | Battery pack topology structure on state-of-charge estimation accuracy in electric vehicles | |
| Chen et al. | State of Charge Estimation of Lithium-Ion Battery Using Energy Consumption Analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |