ELECTROCHEMICAL SUPERCAPACITOR/LEAD-ACID BATTERY HYBRID ELECTRICAL ENERGY STORAGE DEVICE
First Claim
1. A hybrid electrical energy storage device having a lead-acid battery connected to an electric double layer electrochemical capacitor in a common case and sharing a common aqueous sulfuric acid electrolyte, said device further comprising:
- at least one non-polarizable positive electrode;
at least one non-polarizable negative electrode;
at least one polarizable electric double layer negative electrode; and
separators residing between said electrodes.
1 Assignment
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Accused Products
Abstract
A hybrid lead-acid battery/electrochemical capacitor electrical energy storage device. The lead-acid battery and electrochemical capacitor reside in the same case and are electrically connected. Preferably, a hybrid device of the present invention includes at least one non-polarizable positive electrode, at least one non-polarizable negative electrode, and at least one polarizable electric double layer negative electrode. Separators reside between the electrodes and the separators and electrodes are impregnated with an aqueous sulfuric acid electrolyte. A hybrid device of the present invention exhibits high power characteristics.
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Citations
20 Claims
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1. A hybrid electrical energy storage device having a lead-acid battery connected to an electric double layer electrochemical capacitor in a common case and sharing a common aqueous sulfuric acid electrolyte, said device further comprising:
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at least one non-polarizable positive electrode; at least one non-polarizable negative electrode; at least one polarizable electric double layer negative electrode; and separators residing between said electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hybrid lead-acid battery/electrochemical capacitor electrical energy storage device, comprising:
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at least one non-polarizable positive electrode serving as a positive electrode of a lead-acid battery portion of said device; at least one non-polarizable positive electrode serving as a positive electrode of an electrochemical capacitor portion of said device; at least one non-polarizable negative electrode serving as a negative electrode of said lead-acid battery portion of said device; at least one polarizable negative electrode serving as a negative electrode of said electrochemical capacitor portion of said device; separators residing between said electrodes; a positive electrode connector connecting said non-polarizable positive electrodes; a negative electrode connector connecting said polarizable and non-polarizable negative electrodes; an aqueous sulfuric acid electrolyte; a common case housing said electrodes, said separators, said electrode connectors, and said electrolyte; a positive terminal coupled to said positive electrode connector and extending through a wall of said case; and a negative terminal coupled to said negative electrode connector and extending through a wall of said case. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A hybrid lead-acid battery/heterogeneous electrochemical capacitor electrical energy storage device, comprising:
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at least one non-polarizable lead dioxide positive electrode serving as a positive electrode of a lead-acid battery portion of said device; at least one non-polarizable lead dioxide positive electrode serving as a positive electrode of an electrochemical capacitor portion of said device; at least one non-polarizable lead-based negative electrode serving as a negative electrode of said lead-acid battery portion of said device; at least one polarizable activated carbon-based negative electrode serving as a negative electrode of said electrochemical capacitor portion of said device; porous separators residing between said electrodes; a positive electrode connector connecting said non-polarizable positive electrodes; a negative electrode connector connecting said polarizable and non-polarizable negative electrodes; an aqueous sulfuric acid electrolyte impregnating said electrodes and said separators; a common case housing said electrodes, said separators, said electrode connectors, and said electrolyte; a positive terminal coupled to said positive electrode connector and extending through a wall of said case; and a negative terminal coupled to said negative electrode connector and extending through a wall of said case. - View Dependent Claims (18, 19, 20)
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Specification