Vibration resistant electrochemical cell having deformed casing and method of making same
First Claim
1. In a vibration resistant electrochemical cell including an electrode assembly of spirally wound plate electrodes having at least one end terminating among the outer convolutions of the electrode assembly, and further having internal terminal connections at predetermined locations relative to said end the improvement comprising the combination of:
- radially asymmetric external terminals associated with said internal terminal connections, anda tubular case of deformable material receiving said electrode assembly and having inwardly directed deformed wall portions firmly engaging said electrode assembly and restraining it against movement within the case,said external terminals having a fixed circumferential orientation relative to said case so that said deformed wall portions are displaced from said electrode terminal and by a known amount sufficient to avoid the exertion of damaging mechanical stress upon the assembly at said terminal end.
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Accused Products
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.
445 Citations
4 Claims
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1. In a vibration resistant electrochemical cell including an electrode assembly of spirally wound plate electrodes having at least one end terminating among the outer convolutions of the electrode assembly, and further having internal terminal connections at predetermined locations relative to said end the improvement comprising the combination of:
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radially asymmetric external terminals associated with said internal terminal connections, and a tubular case of deformable material receiving said electrode assembly and having inwardly directed deformed wall portions firmly engaging said electrode assembly and restraining it against movement within the case, said external terminals having a fixed circumferential orientation relative to said case so that said deformed wall portions are displaced from said electrode terminal and by a known amount sufficient to avoid the exertion of damaging mechanical stress upon the assembly at said terminal end. - View Dependent Claims (2, 3, 4)
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Specification