Magnetized current collectors combined with magnetic shielding means
First Claim
1. A battery comprising an electrolyte, an anode structure, and a cathode structure, wherein at least one of the electrode structures comprises:
- a current collector consisting of a magnetized sheet of a permanent magnet material having first and second faces, and having within said sheet a magnetic field direction normal to the first and second faces; and
a body of electroactive material in continuous electrical contact with the sheet of permanent magnet material on only the first face of the magnetized sheet.
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Abstract
Battery modification directed to problem of reduced withdrawable current capacity of transiently highly-loaded discharging batteries. Prior art batteries reviewed are: two which enhance galvanic reaction during discharge by circulating low-viscosity electrolyte around magnets spaced between electrodes; and one using magnetic material at negative electrodes to limit dendrite formation during battery charging, whether the electrolyte is a liquid solution or solidified by gelling. The present invention is a current collector preferably comprising a magnetized sheet of foamed nickel having North and South poles on opposite faces, and folded about a small coercivity mumetal insert, installing such an assembly as the current collector of any two-sided type plate electrode. A variety of embodiments is disclosed, as are various arrangements combining more than one type embodiment per battery.
17 Citations
2 Claims
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1. A battery comprising an electrolyte, an anode structure, and a cathode structure, wherein at least one of the electrode structures comprises:
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a current collector consisting of a magnetized sheet of a permanent magnet material having first and second faces, and having within said sheet a magnetic field direction normal to the first and second faces; and
a body of electroactive material in continuous electrical contact with the sheet of permanent magnet material on only the first face of the magnetized sheet. - View Dependent Claims (2)
the sheet of permanent magnet material bent to form a fold bounded by inwardly facing approximately equally sized surface portions of only the second face of the magnetized sheet; and
,an insert consisting of magnetically soft ferromagnetic material that occupies said fold.
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Specification
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- Resources
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Current AssigneeOʼbrien, Robert Neville
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Original AssigneeOʼbrien, Robert Neville
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InventorsOʼBrien, Robert Neville
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Primary Examiner(s)CHANEY, CAROL DIANE
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Application NumberUS09/203,285Time in Patent Office819 DaysField of Search429/10, 429/7, 429/233US Class Current429/10CPC Class CodesH01M 4/661 Metal or alloys, e.g. alloy...H01M 4/669 SteelsH01M 4/70 characterised by shape or formY02E 60/10 Energy storage using batteries
