Disclosed is an electrochemical energy conversion device (1) comprising at least one electrode subassembly (2), in particular a rechargeable one, which is to at least temporarily make available electric energy especially to a consumer and which includes at least two electrodes (3, 3a) of opposite polarity, further comprising at least one current conducting unit (4, 4a) to be electrically connected, preferably bonded, to one of the electrodes (3, 3a) of the electrode subassembly (2), and comprising a cell housing (5) that includes a first housing part (6) for at least partially enclosing the electrode subassembly (2).