Abstract A galvanic cell and battery sealant is described in which the sealant between container and cover has a permanent foam structure. The sealant may be any of the available sealant materials known to the art, having the properties of adherence, foamability, permanence and inertness to the battery electrolyte. The foamed sealant is equally suitable for batteries closed by sealant alone without a cover. Typical sealant materials are foamed epoxy, foamed phenolic, foamed furan and foamed polyester. The density of the foamed material may be chosen to be between 2 and 50 lbs. per cubic ft. A method for sealing galvanic batteries and cells also form a part of the invention. The foam sealant is readily removeable for battery repair.
A galvanic battery as defined in claim 1 wherein the sealant is a liquid prior to curing and a solid when cured, the sealant is inert to the battery electrolyte and the sealant is adhered to the battery container and cover.
Claim 2
Dependent Claim
14 words
A galvanic battery defined in claim 2 wherein the sealant is foamed epoxy resin.
Claim 3
Dependent Claim
15 words
A galvanic battery as defined in claim 2 wherein the sealant is foamed furan resin.
Claim 4
Dependent Claim
24 words
A galvanic battery as defined in claim 2 wherein the density of the foamed sealant is between 2.0 and 50 lbs. per cubic ft.
Claim 5
Dependent Claim
24 words
A galvanic battery as defined in claim 2 wherein the density of the foamed sealant is between 4 and 30 lbs. per cubic ft.
Claim 6
Dependent Claim
15 words
A galvanic battery as defined in claim 2 wherein the sealant is foamed phenolic resin.
Claim 7
Dependent Claim
15 words
A galvanic battery as defined in claim 2 wherein the sealant is foamed polyester resin.