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US 4,064,725 AGranted
Apparatus for making spirally wound electrochemical cells
AssigneeThe Gates Rubber Company
InventorsLeonard F. Hug, Donald H. McClelland, Toshio Uba
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Abstract
A spirally wound element comprising opposite polarity plates and interleaved separator is described, for use in electrochemical cylindrically configured cells. The cell pack has a uniform predetermined cross section irrespective of variation in component thicknesses as long as such thicknesses are within specified tolerances. Dual head, belt-driven winder and method are also described for producing the spiral cell pack.
Claims7
Apparatus for spirally winding electrode plates and interleaved separators into a generally cylindrical form, comprising:
- first and second retractable juxtaposed winding heads having driving surfaces;
- means for advancing and retracting the winding heads relative to each other;
- a free turning mandrel positioned between the driving surfaces;
- means for feeding a leading edge of one of the electrode plates flanked on at least one of its sides with separator material in between the mandrel and the driving surface of the winding head;
- means for feeding a leading edge of the other electrode plate flanked on at least one of its sides with separator material in between the mandrel and the driving surface of the second winding head;
- and
- means for driving at least one of the driving surfaces about the winding head to spirally wind the electrode plates and separators.
4 more elements
Dependencies are inferred from the claim text.