The invention pertains to a method of determining the State of Health (SoH) and/or State of Charge (SoC) of a rechargeable battery during use of said battery, the method comprising the steps of: generating a first excitation signal within a first selected frequency range, generating a second excitation signal within a second selected frequency range, applying said first and second excitation signals on said rechargeable battery, measuring the response signal for each of said two excitation signals, and then calculate the Electrochemical Impedance (EI) as the ratio between the excitation signals and respective response signals, and then determine the SoH and/or SoC of the rechargeable battery by comparing the calculated EI to a circuit model for the battery and/or determining the SoH and/or SoC of the rechargeable battery by directly evaluating characteristics of the EI. The invention also pertains to a battery management system configured for executing the steps of the method according to the invention.


    Access

    Download


    Export, share and cite



    Title :

    ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY IN BATTERY MANAGEMENT SYSTEMS



    Publication date :

    2017-08-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    Electrochemical impedance spectroscopy in battery management systems

    CHRISTENSEN ANDREAS ELKJAER / MOSBAEK RASMUS RODE | European Patent Office | 2019

    Free access

    ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY IN BATTERY MANAGEMENT SYSTEMS

    CHRISTENSEN ANDREAS ELKJÆR / MOSBÆK RASMUS RODE | European Patent Office | 2021

    Free access

    Embedding Electrochemical Impedance Spectroscopy in Smart Battery Management Systems Using Multicore Technology

    Armengaud, Eric / Macher, Georg / Groppo, Riccardo et al. | Springer Verlag | 2016


    On-line electrochemical impedance spectroscopy for lithium-ion battery systems

    Koch, Reinhold / Technische Universität München | TIBKAT | 2017