Lead acid battery having ultra-thin titanium grids
OwnerEliot Gerberinventor
Life of this patent
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Abstract
A lead acid electric storage battery uses conventional lead-acid secondary battery chemistry. The battery may be a sealed battery, an unsealed battery or a conventional multi-cell battery. The battery has a set of positive battery grids (plates) which are constructed with a body portion of thin titanium expanded metal having a thickness preferably in the range 0.1 mm to 0.9 mm and most preferably 0.2 mm to 0.4 mm. Typically the battery would have over 250 grids in a 12 inch long battery case.
Claims12
A lead-acid battery having a plurality of positive and negative battery grids with separators therebetween:
- (a) at least some of said positive grids being a lead-free titanium alloy having 0.009% to 0.9% selected from the group of palladium, ruthenium and palladium with ruthenium;
- (b) said titanium alloy grids having an expanded metal body portion and said grids having a thickness of less than 1 mm and not being a foil;
- (c) said negative grids having an expanded metal body portion having a thickness of less than 0.8 mm and not being a foil
- (d) said titanium and negative grids each forming a plane having an imaginary line perpendicular thereto, said battery having at least 10 of said grids perpendicularly aligned along 1 inch (25.4 mm) of said imaginary line.
A lead-acid battery having a plurality of positive and negative battery grids with separators therebetween:
- (a) at least some of said positive grids being lead-free titanium grids;
- (b) said titanium grids having an expanded metal body portion and said grids having a thickness of less than 0.9 mm and not being a foil;
- (c) each of said titanium grids forming a plane having an imaginary line perpendicular thereto, said battery having at least 5 of said positive titanium grids perpendicularly aligned along 1 inch (25.4 mm) of said imaginary line;
- wherein the titanium is a titanium alloy containing 0.4% to 0.01% selected from the group of palladium, ruthenium and palladium and ruthenium.
A lead-acid battery having a plurality of positive and negative battery grids with separators therebetween:
- (a) at least some of said positive grids being lead-free titanium grids;
- (b) said titanium grids having an expanded metal body portion and said grids having a thickness of less than 0.9 mm and not being a foil;
- (c) each of said titanium grids forming a plane having an imaginary line perpendicular thereto, said battery having at least 5 of said positive titanium grids perpendicularly aligned along 1 inch (25.4 mm) of said imaginary line;
- said battery
- including a plurality of aluminum core battery grids of expanded metal in a thickness of less than 0.9 mm and not a foil;
- said aluminum grids having a thin protective covering coating of electrically conductive flouropolymer, the protective coating having a thickness of less than 100 microns.
Dependencies are inferred from the claim text.