A VENTILATION ELEMENT FOR A METAL-AIR BATTERY, RELATED DEVICES AND MANUFACTURING METHODS

摘要

The present invention is related to the ventilation of a metal-air battery for a hearing device. The invention proposes a ventilation element (1) comprising a membrane (2) with at least one vent opening (3) of predetermined geometrical dimension for providing ventilation between the interior of the metal-air battery and its surroundings. Thereby the membrane (2) is obtained by depositing material, wherein the at least one vent opening (3) is a recess clearance in the material.