Ultra-thin plate electrochemical cell and method of manufacture

Details Ultra-thin plate electrochemical cell and method of manufacture Ultra-thin plate electrochemical cell and method of manufacture

H - Electricity

01

M

H01M 10/04 (2006.01) H01M 10/00 (2006.01)

Patent

CA 2410721

Electrochemical cells are made by coating the major faces of positive and negative plates with a layer of electro- chemically active paste, but leaving uncoated portions corresponding to single horizontal edge of the plates. A cell unit consisting of a positive plate, a negative plate and a sheet of separator disposed between said plates, is assembled in such a manner that the horizontal edge of the positive plate is aligned opposite the uncoated horizontal edge of the negative plate. Negative and positive connectors are attached to the horizontal edges of the cells in a circular motion. The horizontal edge of the negative plate extends beyond the edge of the separator and the separator extends beyond the edge of the positive plate. The horizontal edge of the positive plate extends beyond the edge of the separator and the separator extends beyond the edge of the negative plate. The cell unit is assembled by spirally winding a single sheet of the separator and the negative and positive plates on a mandrel.

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