Abstract: A battery device is provided which includes a cell stack of rechargeable individual battery cells which are touchingly stacked and clamped to one another in a stack direction, in particular so-called hard case battery cells, wherein on at least one mounting surface of a cell housing of a respective individual battery cell including mounting surfaces that are arranged rectangularly, at least one separate channel web for forming a liquid channel that can be flowed through is arranged. At least one of the respective channel webs is touchingly fixed in a firmly bonded manner to the respective mounting surface by bonding, practically with web adhesive.

Abstract: The invention relates to a flow guiding device (1) for guiding a cooling fluid for a battery module. The flow guiding device (1) comprises a base plate (2), on the surface of which at least one electronic component (4) for electrically connecting the flow guiding device (1) to the battery module is arranged, and at least one flow guiding element (3) which projects from the surface of the base plate (2) and at least partially delimits a fluid path (5) for the cooling fluid to flow through.