Metal-air battery with environment control for intermittent high

Details Metal-air battery with environment control for intermittent high Metal-air battery with environment control for intermittent high

1980-03-24

1981-04-14

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 72, 429110, H01M 1206

Patent

active

042620627

ABSTRACT:
An air/metal cell includes an internal gas-permeable membrane to restrict the transfer of oxygen from ambient atmosphere to the cathode, and incorporates an internal valve actuated by external force on the cell to open the valve and admit substantial quantities of oxygen for intermittent high current drain on the cell. Preferably the external force is provided by the same switching device which closes the electric circuit requiring the high current drain. The cell is specifically shown in the environment of a zinc/air cell powering a digital wristwatch. The high current mode of the cell is actuated by the pushbutton of the watch which turns on a miniature lamp.

REFERENCES:
patent: 2468430 (1949-04-01), Derksen
patent: 3746580 (1973-07-01), Aker et al.

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