A METHOD AND SYSTEM FOR OPTIMIZING THE LIFETIME OF AN ENERGY STORAGE SYSTEM

摘要

The present invention relates to a method for optimizing the operating lifetime of an energy storage system (7) comprising a battery pack (7a) with a plurality of battery cells (C1, C2, C3,...). The method comprises: measuring the temperature (T) of the battery pack (7a) by means of a sensor unit (7b); and measuring at least one further parameter (P) representing an indication of the operating lifetime of the battery pack (7a). Furthermore, the method comprises the steps of: detecting whether said parameter (P) reaches a predetermined threshold value (U1) indicating that said battery pack (7a) is in a condition close to an end of its expected operating lifetime; and, in the event that said threshold value (U1) is reached, initiating heating of said battery pack (7a), thereby increasing the temperature (T) of said battery pack (7a) to a predetermined value (T1) so as to prolong said operating lifetime of the battery pack (7a). The invention also relates to a system for optimizing the operating lifetime of an energy storage system.