ELECTROCHEMICAL ENERGY STORAGE ELEMENT, BATTERY MODULE AND BATTERY STORAGE SYSTEM

Es wird ein elektrochemisches Energiespeicherelement, ein Batteriemodul mit einem Gehäuse und einer Mehrzahl von elektrochemischen Energiespeicherzellen, die im Inneren des Gehäuses angeordnet sind, oder ein Batteriespeichersystem mit mindestens zwei Batteriemodulen vorgeschlagen. Das elektrochemische Energiespeicherelement oder das Batteriemodul oder das Batteriespeichersystem zeichnet sich dadurch aus, dass das elektrochemische Energiespeicherelement oder das Batteriemodul oder das Batteriespeichersystem (100) mindestens ein Auffangmittel (130) für entweichende Rauchgase (210) umfasst. Bei dem Auffangmittel (130) kann es sich insbesondere um einen entfaltbaren Beutel handeln. The invention relates to a battery storage system (100) comprising at least two battery modules (10), which each have a plurality of electrochemical energy storage cells, and optionally a base part (50) and/or a cover part (60). Each battery module (10) has at least one outer contacting device (11, 12) for connecting to another battery module (10) of the battery storage system and/or optionally to the base part (50) and/or the cover part (60) of the battery storage system. The contacting devices (11, 12) comprise at least one, preferably multiple connections for power and/or data signals. Neighbouring battery modules (10) within the battery storage system (100) are electrically connected to one another via the contacting devices (11, 12). The battery storage system is characterised in that the contacting devices (11, 12) are each surrounded by a circumferential mechanical guide (14) and in that at least one gas through-opening (13) is provided within the circumferential mechanical guide (14) in the region of the contacting devices (11, 12)., via which a gas exchange can take place between neighbouring battery modules (10). This gas exchange can be used for the purpose of cooling and/or for the purpose of smoke gas management.