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A method of making a multi-plate wound cell assembly constructed similar to a conventional jellyroll electrode assembly except that each electrode comprises a series of plates spaced along a continuous current collector, and the plates are flat-folded rather than wound into a cylinder, is described.

A method of making a multi-plate wound cell assembly constructed similar to a conventional jellyroll electrode assembly except that each electrode comprises a series of plates spaced along a continuous current collector, and the plates are flat-folded rather than wound into a cylinder, is described. The length of the current collector between adjacent plates of the anode and cathode electrodes increases as the folding progresses to allow for the increase as the electrode assembly is flat-folded.

대표청구항 ▼

[ What is claimed is:] [1.] A method for providing a battery, comprising the steps of:a) providing an anode comprising an anode current collector having a plurality of anode connector portions bridging between adjacent anode contact portions of the anode current collector provided with an anode acti

[ What is claimed is:] [1.] A method for providing a battery, comprising the steps of:a) providing an anode comprising an anode current collector having a plurality of anode connector portions bridging between adjacent anode contact portions of the anode current collector provided with an anode active material contacted thereto to thereby provide anode plates connected by the anode connector portions, and including providing the anode connector portions of an increasingly greater length from a first anode plate progressing to a last anode plate;b) providing a cathode electrode comprising a cathode current collector having a plurality of cathode connector portions bridging between adjacent cathode contact portions of the cathode current collector provided with a cathode active material contacted thereto to thereby provide cathode plates connected by the cathode connector portions, and including providing the cathode connector portions of an increasingly greater length from a first cathode plate progressing to a last cathode plate;c) disposing a separator between the anode electrode and the cathode electrode juxtaposed one on top of the other to provide a flat foldable anode and cathode electrode overlay;d) folding a first plate of one of the anode electrode and the cathode electrode on top of a second plate of the other of the anode electrode and the cathode electrode with a first connector portion of the one folded cathode plate or anode plate of a length greater than a thickness of the other of the anode electrode or the cathode electrode to thereby provide a first folded electrode configuration and further including folding the first folded electrode configuration on top of a next anode and cathode electrode overlay with the connector portions of the anode electrode and the cathode electrode intermediate the first folded electrode configuration and the next anode and cathode electrode overlay having lengths sufficient to provide for a combined thickness of a subsequent folded electrode configuration consisting of the first folded electrode configuration and the next anode electrode and cathode electrode overlay and still further providing the respective successive connector portions connecting between the subsequent folded electrode configuration and the successive anode plates and the successive cathode plates of the electrode overlay of a progressively greater length accommodating an ever increasing thickness of a resultant folded electrode configuration folded to the last anode plate and the last cathode plate of the electrode overlay; ande) activating the operatively associated anode electrode and the cathode electrode with an electrolyte provided in a casing housing the battery.