Specific gravity detecting device for lead-acid battery

Details Specific gravity detecting device for lead-acid battery Specific gravity detecting device for lead-acid battery

1984-12-31

1987-08-25

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

73 32R, 324 65P, 324437, G01N 2746

Patent

active

046895710

ABSTRACT:
A specific gravity detecting apparatus for a lead-acid battery having two electrodes adapted to be immersed in an electrolyte to provide a potential difference therebetween which is indicative of the specific gravity of the electrolyte. One of the two electrodes is a lead electrode composed of a collector 6 made of lead and a lead alloy and a porous lead body 4 covered by an acid resistant porous sleeve 3; the other is a lead dioxide electrode composed of a collector 6' made of lead and a lead alloy and a porous lead dioxide body 5 covered by an acid- and oxidation-resistant porous sleeve 3'. The two electrodes are charged normally or as required while there is no necessity of obtaining specific gravity data, and later discharged with another lead electrode as an opposite electrode so that, in the open-circuit state, the potential difference between the lead electrode and the lead dioxide electrode is accurately determined. In preferred embodiments, the two electrodes and a temperature sensor having an acid-resistant material as its outer portion are mounted in a single molded body 1 made of an acid-resistant material.

REFERENCES:
patent: 2844532 (1958-07-01), White et al.
patent: 3060374 (1962-10-01), Strain
patent: 3060375 (1962-10-01), Godshalk et al.
patent: 3657639 (1972-04-01), Willihnganz
patent: 4011746 (1977-03-01), Weitz, Jr. et al.

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