Cell or battery state of discharge indicator

Details Cell or battery state of discharge indicator Cell or battery state of discharge indicator

1976-03-24

1977-09-13

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

With measuring, testing, or indicating means

For charge or liquid level

H01M 600

Patent

active

040483886

ABSTRACT:
The invention relates to a discharge indicator of an electrochemical generator such as a cell or battery comprising a consumable negative electrode basically containing powdered metal, for example, zinc. The said indicator is constituted by an enclosure containing a substance which can be seen from the outside of the battery and having an appearance which changes on coming into contact with the electrolyte, the said enclosure being closed by a metal plate arranged within the negative electrode and which is made of a material chosen from among zinc, zinc alloys, zinc amalgams. Application of the indicator is to air depolarization cells.

REFERENCES:
patent: 1497388 (1924-06-01), Sterling
patent: 2980754 (1961-04-01), Reilley et al.
patent: 3563806 (1971-02-01), Hruden
patent: 3773563 (1973-11-01), Eaton et al.

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