Abstract:
A battery is provided with a passageway for the venting of gases generated by the cell. The passageway is outside of or in a gaspervious layer of the cell enclosure, and gases travel between the interior of the cell and the passageway by first passing through the gas-pervious layer. The passageway may be the center of a hollow, gas-pervious fiber. Alternatively, a fiber may be in a passageway between the unlaminated surfaces of an inner gaspervious layer and an outer layer which is impervious to liquids and less pervious than the inner layer to the gases generated by the cell. The gas-pervious layer may be (i) on the outside face of an end cell of the battery to provide a terminal vent, (ii) situated within a gas-pervious adhesive, or (iii) situated between the cells of a multicell battery.