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.
MODULAR ENERGY STORAGE SYSTEM
MODULARES ENERGIESPEICHERSYSTEM
SYSTÈME DE STOCKAGE D'ÉNERGIE MODULAIRE
2023-04-05
Patent
Electronic Resource
English
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 |