Specific gravity detecting device for lead-acid battery
First Claim
1. A specific gravity detecting device for immersion in electrolyte of a lead-acid battery, comprising:
- a housing;
a first electrode secured within the housing and comprising a first conductor (6) made of lead and a lead alloy;
a porous lead body (4) surrounding a portion of the conductor extending outwardly from the housing; and
an acid-resistant porous sleeve (3) covering the porous lead body and peripherally insulating the porous lead body from direct contact with the electrolyte; and
a second electrode secured within the housing and comprising a second conductor (6'"'"') made of lead and a lead alloy;
a porous lead dioxide body (5) surrounding a portion of the second conductor extending outwardly from the housing;
an acid- and oxidation-resistant porous sleeve (3'"'"') covering the porous lead dioxide body and peripherally insulating the porous lead dioxide body from direct contact with the electrolyte; and
means to insulate ends of said portions of the conductors extending outwardly from the housing.
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Accused Products
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.
11 Citations
7 Claims
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1. A specific gravity detecting device for immersion in electrolyte of a lead-acid battery, comprising:
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a housing;
a first electrode secured within the housing and comprising a first conductor (6) made of lead and a lead alloy;a porous lead body (4) surrounding a portion of the conductor extending outwardly from the housing; and
an acid-resistant porous sleeve (3) covering the porous lead body and peripherally insulating the porous lead body from direct contact with the electrolyte; and
a second electrode secured within the housing and comprising a second conductor (6'"'"') made of lead and a lead alloy;
a porous lead dioxide body (5) surrounding a portion of the second conductor extending outwardly from the housing;
an acid- and oxidation-resistant porous sleeve (3'"'"') covering the porous lead dioxide body and peripherally insulating the porous lead dioxide body from direct contact with the electrolyte; and
means to insulate ends of said portions of the conductors extending outwardly from the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification