Spiral battery cell

Claim 1

A RECHARGEABLE ELECTROCHEMICAL BATTERY CELL COMPRISING A HOUSING WITH A CLOSED INNER PERIPHERAL WALL; ELECTRICALLY CONDUCTIVE CORE MEANS DISPOSED WITHIN AND COMMUNICATING WITH SAID HOUSING AND SPACED THEREFROM; INSULATING MEANS INTERPOSED BETWEEN SAID CORE MEANS AND SAID HOUSING FOR ELECTRICALLY ISOLATING SAID CORE MEANS FROM SAID HOUSING; AT LEAST ONE FOIL LIKE POSITIVE ELECTRODE STRIP DISPOSED BETWEEN SAID CORE AND SAID HOUSING WITH ITS MAJOR SURFACE SUBSTANTIALLY PARALLEL TO SAID CORE; AT LEAST ONE ELECTROLYTE ADSORBABLE IONICALLY PERMEABLE SEPARATOR MEANS AT LEAST COEXTENSIVE IN LENGTH WITH SAID POSITIVE ELECTRODE WITH ITS MAJOR SURFACE SUBSTANTIALLY PARALLEL TO THE MAJOR SURFACE OF SAID POSITIVE ELECTRODE, AND DISPOSED ON THE SIDE THEREOF TOWARD SAID HOUSING; AT LEAST ONE FOIL LIKE SOLUBLE NEGATIVE ELECTRODE STRIP SUBSTANTIALLY COEXTENSIVE IN LENGTH WITH SAID POSITIVE ELECTRODE, WITH ITS MAJOR SURFACE SUBSTANTIALLY PARALLEL TO THE MAJOR SURFACE OF SAID SEPARATOR AND SAID POSITIVE ELECTRODE, AND DISPOSED ON THE SIDE THEREOF TOWARD SAID HOUSING; WHEREIN SAID ELECTRODES AND SAID SEPARATOR SUBSTANTIALLY FILL THE ANNULAR SPACE BETWEEN SAID CORE AND SAID HOUSING; SAID CORE MEANS BEING THE TERMINAL FOR SAID POSITIVE ELECTRODE; AND SAID CELL IS FILLED WITH ELECTROLYTE, THE SAID ELECTRODES BEING SO DIMENSIONED THAT THE EDGE TO SURFACE RATIO IS SMALL.