A system and method for estimating internal parameters of a lithium-ion battery to provide a reliable battery state-of-charge estimate. The method uses a two RC-pair equivalent battery circuit model to estimate the battery parameters, including a battery open circuit voltage, an ohmic resistance, a double layer capacitance, a charge transfer resistance, a diffusion resistance and a diffusion capacitance. The method further uses the equivalent circuit model to provide a difference equation from which the battery parameters are adapted, and calculates the battery parameters from the difference equation.


    Access

    Download


    Export, share and cite



    Title :

    Adaptive battery parameter extraction and SOC estimation for lithium-ion battery


    Contributors:
    LIN JIAN (author) / TANG XIDONG (author) / KOCH BRIAN J (author) / LOGRASSO JOSEPH M (author) / FRISCH DAMON R (author) / NABI REZINA S (author)

    Publication date :

    2017-08-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



    Battery parameter estimation

    LEE TAE-KYUNG | European Patent Office | 2015

    Free access


    Impedance based battery parameter estimation

    LEE TAE-KYUNG | European Patent Office | 2016

    Free access

    IMPEDANCE BASED BATTERY PARAMETER ESTIMATION

    LEE TAE-KYUNG | European Patent Office | 2015

    Free access

    Comparison of Optimization Techniques for Lithium-Ion Battery Model Parameter Estimation

    Ing, Adam / McPhee, John / Masoudi, Ramin et al. | SAE Technical Papers | 2014