Method of manufacturing an electrochemical cell having an alkaline electrolyte and spiral-wound electrodes
AssigneeSaft
InventorJean-Pierre Freluche
Life of this patent
Estimating the term…
Abstract
A method of manufacturing an electrochemical cell having an alkaline electrolyte and spiral-wound electrodes, the method consisting in superposing four items: a positive electrode (2), a separator (4), a negative electrode (3), and another separator (5), with the two separators optionally being two lengths of a common separator; in winding these four items around a core (13) in order to obtain a roll (10); and in inserting said roll in the can (11) of the cell. The method includes the improvement whereby, at the end of the winding operation, the end of one of the elements is fixed on the preceding turn of the same element by means of a hot melt glue which is not soluble in said alkaline electrolyte.
Claims5
A method of manufacturing an electrochemical cell having an alkaline electrolyte and spiral-wound electrodes, the method consisting:
- in superposing four items:
- a positive electrode, a separator, a negative electrode, and another separator, with the two separators optionally between two lengths of a common separator;
- in winding these four items around a core in order to obtain a roll;
- and
- in inserting said roll in the can of the cell;
- the method including the improvement whereby, at the end of the winding operation, the end of one of the elements is fixed on the preceding turn of the same element by means of a hot melt glue which is not soluble in said alkaline electrolyte.
Dependencies are inferred from the claim text.