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US 12,119,497 B2Granted
Water loss reducing pasting mats for lead-acid batteries
AssigneeOwens Corning Intellectual Capital, LLC
InventorRobert Huusken
Life of this patent
Estimating the term…
Abstract
A non-woven fiber mat for lead-acid batteries is provided. The non-woven fiber pasting mat includes glass fibers coated with a sizing composition; a binder composition; and one or more additives. The additives reduce water loss in lead-acid batteries.
Claims12
A lead-acid battery comprising:
- a positive electrode having a first face and a second face opposite said first face and a negative electrode having a first face and a second face opposite said first face, wherein each of said positive and negative electrode is immersed within an electrolyte;
- a fiber pasting mat at least partially covering at least one of said first and second faces of at least one of said positive and said negative electrode, said fiber pasting mat comprising:
- a plurality of fibers coated with a sizing composition;
- a binder composition;
- and
- one or more additives, said one or more additives comprising one or more of rubber additives, rubber derivatives, aldehyde, aldehyde derivatives, metal salts, fatty alcohol ethyoxylates, ethylene-propylene oxide block copolymers, sulphate esters, sulphonate esters, phosphate esters, sulphosuccinates, polyaspartic acid, perfluoroalkylsulfonic acid, polyvinylalcohol, lignin, lignin derivatives, phenol formaldehyde resin, cellulose, and wood flour,
- wherein said one or more additives are operable to reduce water loss in the lead-acid battery.
4 more elements
A method of forming a non-woven fiber mat for use in a lead-acid battery, said method comprising:
- dispersing a plurality of fibers into an aqueous slurry, said fibers being coated with a sizing composition;
- depositing said slurry onto a moving screen;
- applying a binder onto the deposited slurry;
- and
- heating said binder-coated slurry, to remove excess water and cure said binder, thereby forming a non-woven fiber mat, wherein said non-woven fiber mat includes one or more additives included in at least one of said sizing composition and said binder, said additives including one or more of rubber additives, rubber derivatives, aldehyde, aldehyde derivatives, metal salts, fatty alcohol ethyoxylates, ethylene-propylene oxide block copolymers, sulphate esters, sulphonate esters, phosphate esters, sulphosuccinates, polyacrylic acid, perfluoroalkylsulfonic acid, polyvinylalcohol, lignin, lignin derivatives, phenol formaldehyde resin, cellulose, and wood flour.
2 more elements
Dependencies are inferred from the claim text.