Method of making vibration resistant electrochemical cell having deformed casing
AssigneeGeneral Electric Company
InventorJohn W. Hooke
Life of this patent
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Abstract
An electrochemical cell of the type having a spirally wound electrode assembly contained within a cell case, wherein the case is provided with inwardly directed deformed wall portions which engage the electrode assembly to restrain it against movement within the case. External electrical terminals are physically affixed to the electrode assembly at predetermined locations relative to the terminal ends of the spirally wound electrodes; such terminals are used to physically align the cells prior to deforming the case to ensure that the deformed wall portions of the case are displaced from the terminal ends of the electrodes, thereby avoiding undue stress upon the electrode assembly.
Claims8
In a method of manufacturing electrochemical cells of the type having an electrode assembly including spirally wound plate electrodes of which at least one electrode has an end terminating among the outer convolutions of the electrode assembly, the improvement comprising:
- providing a generally tubular cell case of permanently deformable material;
- inserting the electrode assembly into said cell case;
- aligning the electrode assembly within the case so that the terminal end of said one electrode is in a predetermined angular position relative to a reference point exterior of the cell case;
- and
- inwardly deforming said case at locations angularly displaced from said angular position of the terminal end of said one electrode, the deformed casing engaging the electrode assembly with sufficient force to restrain it against movement within the case such that deformations formed on said casing at said locations do not contact said terminal end of said one electrode.
Dependencies are inferred from the claim text.