| 摘要 |
A safety device in hermetic seals in electrochemical cells of the type having a general construction comprising a metallic container (1), in which the active materials which constitute the anode (2) and the cathode (3) are separately contained, characterised in that facing the lower surface of the cover (5), the plastic part (4) has an upper surface with three channels (12) arranged radially at 120° and formed by a reduction in the nominal and normal thickness of the material of the plate (4) which is comprised between the weakened section (10) and the peripheral wall (7); this reduction is progressively greater towards the centre of the plastic part (4) and determines a gradual reduction in the thickness of the annular base (8), or an increasing depth of the channels (12), in the direction from the peripheral wall (7) towards the core (6), the smallest thickness of the annular base (8) being slightly greater than the thickness of the weakened section (10). |
