Lightweight, low resistance electrode plate for lead-acid batteries
AssigneeConcorde Battery Corporation
InventorsRamesh Bhardwaj, John B. Timmons, Joseph A. Orsino
Life of this patent
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Abstract
Lightweight, low resistance, thin plate for lead-acid electrochemical cells formed primarily of an aluminum foil substrate having a thickness of between about 0.005 inches and 0.030 inches, and a continuous outer layer of lead or lead alloy having a thickness of less than about 0.005 inches and that is corrosive resistant to the electrolytic acid of the battery.
Claims15
A lightweight monopolar electrode for a lead acid electrochemical cell comprising:
- (a) a plate formed of:
- i) a lightweight, low resistivity foil substrate having a thickness of between about 0.005 inches and 0.030 inches, said foil substrate;
- ii) a continuous outer protective layer of lead containing material, said outer layer having a thickness of less than about 0.005 inches;
- (b) said layer of lead containing material being so applied as to prevent attack by corrosive electrolytic acids, and
- (c) a layer of active paste applied over a substantial portion of said continuous outer layer of lead containing material.
A lead-acid battery having at least one electrochemical cell formed of at least one set of alternating monopolar electrodes, one of the set being a current collecting electrode, housed in a compartment containing electrolyte, wherein at least the current collecting electrodes comprise:
- (a) a plate formed of:
- (i) a lightweight, low resistivity foil substrate having a thickness of between about 0.005 inches and 0.030 inches, said foil substrate;
- (ii) a continuous outer layer of lead containing material, said outer layer having a thickness of less than about 0.005 inches;
- (b) said layer of lead containing material being so applied as to prevent attack by corrosive acids in the electrolyte, and
- (c) a layer of electrochemically active paste applied over a substantial portion of said continuous outer layer of lead containing material, said active paste selected from the group of materials consisting of negative paste and positive paste.
Dependencies are inferred from the claim text.