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US 6,063,525 AGranted
Source of electrical power for an electric vehicle and other purposes, and related methods
AssigneeBipolar Technologies, Inc.
InventorRodney M. LaFollette
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AssigneeBipolar Technologies, Inc.
InventorRodney M. LaFollette
Estimating the term…
Microthin sheet technology is disclosed by which superior batteries are constructed which, among other things, accommodate the requirements for high load rapid discharge and recharge, mandated by electric vehicle criteria. The microthin sheet technology has process and article overtones and can be used to form thin electrodes used in batteries of various kinds and types, such as spirally-wound batteries, bipolar batteries, lead acid batteries, silver/zinc batteries, and others. Superior high performance battery features include: (a) minimal ionic resistance; (b) minimal electronic resistance; (c) minimal polarization resistance to both charging and discharging; (d) improved current accessibility to active material of the electrodes; (e) a high surface area to volume ratio; (f) high electrode porosity (microporosity); (g) longer life cycle; (h) superior discharge/recharge characteristics; (j) higher capacities (A.multidot.hr); and k) high specific capacitance.
A spirally configurated high capacity battery cell comprising a positive spiral electrode of one piece construction, a spiral negative electrode and a separator interposed between the positive electrode and the negative electrode, the positive electrode comprising a single piece of microthin metal sheet having a thickness within the range of 4-62 mils comprised of integral microcorrugations, the thin sheet of metal defining at least one integral region comprising high microporosity.
A spirally configurated high capacity silver zinc battery cell comprising a positive spiral electrode layer and a separator layer interposed between the positive electrode layer and a negative electrode layer, the positive electrode layer comprising a thin metal sheet comprised of microcorrugations, the thin sheet of metal defining at least one surface region comprising high microporosity.
In a battery, two spirally-configurated electrodes, at least one electrode comprising a microthin metal foil having a thickness within the range of 4-62 mils comprised of microcorrugations comprising alternate microgrooves and microridges exposed microregions of which being electrochemically corroded to provide enhanced exposed porosity.
Dependencies are inferred from the claim text.