Method and apparatus for cell fold adhesion when filling a battery module with thermal paste

A method for filling a thermal paste (220) into a battery module comprising a module housing (230) with a cooling wall (221), is described. A pouch cell (110) is formed as a rectangular surface with an edge with a pouch cell thickness. A fold (111) extends along the edge. A stack is formed by a plurality of pouch cells (110). The stack with its stack cooling side is arranged at the cooling wall (221) in the module housing (230). The opening (231 ) is arranged in the cooling wall (221 ). A fold (111 ) of the pouch cell (110) is folded over toward the surface of this pouch cell (110) and glued. The thermal paste (220) is filled in through the at least one opening (231) and the thermal paste (220) spreads homogeneously in the first flow channel.