Composition for extending life of lead acid batteries
AssigneeBattery Solution International Ltd.
InventorEmilia Larin
Life of this patent
Estimating the term…
Abstract
An additive is for extending the useful life-span of the lead acid batteries. The additive is a safe and environmentally harmless material in the form of an aqueous liquid or an easy-to-use capsule. A method refurbishes lead acid batteries and extends their life-span.
Claims14
An additive for the electrolyte of lead acid batteries comprising at least one uncharged polysaccharide and at least one charged polysaccharide, said polysaccharides having an average polymerization degree of 100 or more, and said charged polysaccharide having an average charge density of 0.1 or more, wherein said polysaccharides are selected from cellulose derivatives and algal polysaccharides;
- and
- wherein said uncharged polysaccharide comprises cellulose, and wherein said charged polysaccharide comprises a carboxylated polysaccharide, sulfated polysaccharide, or a mixture thereof.
An additive for the electrolyte of lead acid batteries comprising at least one uncharged polysaccharide, at least one charged polysaccharide, and salts of alkali metals or alkaline earth metals, said polysaccharides having an average polymerization degree of 100 or more, and said charged polysaccharide having an average charge density of 0.1 or more, wherein said polysaccharides are selected from cellulose derivatives and algal polysaccharides;
- wherein said charged polysaccharide constitutes at least 50 wt % of said polysaccharides, and said salts constitute up to 50 wt % of said polysaccharides.
An electrolyte for lead acid batteries, comprising at least 32% sulfuric acid, at least one uncharged polysaccharide, at least one charged polysaccharide, and salts of alkali metals or alkaline earth metals, wherein said polysaccharides are selected from cellulose derivatives and algal polysaccharides and said polysaccharides have an average polymerization degree of 100 or more and a total concentration of from 0.01% to 0.07%, wherein said charged polysaccharide has an average charge density of 0.1 or more and constitutes at least 50 wt % of said polysaccharides, and wherein said salts constitute up to 50 wt % of said polysaccharides.
Dependencies are inferred from the claim text.