A method for connecting several functional elements

To a method for connecting a plurality of functional elements to form an assembly, in particular for connecting functional elements of electrochemical converters to individual components thereof, wherein the functional elements comprise edge portions of sheet material which are arranged stacked in a stacking direction to form the edge of stacks to provide, with which a durable and reliable connection of the functional elements in the region of the edge of the stack is possible, it is suggested that the edge portions extend to in the stacking direction successive end sides, that the end faces of the respective edge stacks are arranged relative to each other such that they to be produced within one and a front side area of ​​the edge regions are limited melting zone, that by applying the edge portions with high-energy radiation, the melting zone, starting from the end faces of the edge regions of the respective edge of the stack is generated and that by the solidification of the melt zone, a connection zone is formed interconnecting the functional elements of each module.