Electrical energy storage system comprising a cross-connection of a plurality of parallel energy storage strings that is electrically conductively connected to a current detection means via a diode, and method for detecting a conduction fault

摘要

Electrical energy storage system (1), comprising at least two strings (STR1, STR2, STR3) interconnected in parallel connection, wherein the strings each have at least two electrical energy storage units (15) interconnected in series connection, characterized in that at least one first electrically conductive cross-connection (11) between electrical energy storage units (15) at an identical first electrical potential in the strings (STR1, STR2, STR3) interconnected in parallel connection is electrically conductively connected via at least one diode (12) to a means for detecting an electric current (13) and a controllable electrical energy source (14), wherein the diode (12) is not incorporated into the first electrically conductive cross-connection (11).