Insulating of adjacent lithium-ion batteries by complete overmoulding/pouring of containers in a device

A method for producing a cell module, comprising:

• placing and positioning at least two lithium ion cells in a casting mold;
• filling the casting mold with an encapsulation compound or an injection molding material;
• and
• curing the encapsulation compound or the injection molding material in the casting mold for one-piece formation of an electrical insulation between the cells and a cell module housing having at least one side wall, wherein operating electronics or a housing of the operating electronics of the cell module are jointly encapsulated.