Methods and systems for determining characteristics of energy storage devices (131-134) contained in an energy storage system, ESS, during on-load operation of said ESS. The ESS comprising a plurality of modules (111-114), wherein each module comprising an energy storage device and a switching unit. The methods and systems may include connecting by means of the switching units (121-124) a subset of the plurality of modules (111-114) into a module configuration according to which the respective energy storage devices of the subset of modules are serially connected into a current path to provide an output voltage of the ESS. The methods and systems may include altering the module configuration by switching the energy storage device P of at least one module P into or out of the current path and measuring a current I and a voltage VmP at said energy storage device P. The methods and systems may comprise determining characteristics of the energy storage device P on basis of at least current I and the change over time of said voltage VmP measured before and after switching the energy storage device P.


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    Title :

    MODULAR ENERGY STORAGE SYSTEM


    Additional title:

    MODULARES ENERGIESPEICHERSYSTEM
    SYSTÈME DE STOCKAGE D'ÉNERGIE MODULAIRE


    Contributors:
    SINGER ARTHUR (author) / TRUONG NAM (author)

    Publication date :

    2023-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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