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 10/00 (2006.01) H01M 2/22 (2006.01) H01M 10/04 (2006.01)

Patent

CA 2211518

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.

Cellules électrochimiques créées en enduisant les faces principales, constituées d'une plaque positive et d'une plaque négative, d'une couche de pâte électrochimiquement active, tout en laissant cependant des sections non enduites correspondant à un seul bord horizontal des plaques. Une cellule, constituée d'une plaque positive, d'une plaque négative et d'une couche de séparation placée entre lesdites plaques, est assemblée de telle sorte que le bord horizontal de la plaque positive soit disposé parallèlement et à l'opposé du bord horizontal non enduit de la plaque négative. Des connecteurs positif et négatif sont fixés à ces bords horizontaux des cellules en suivant un mouvement circulaire. Le bord horizontal de la plaque négative dépasse le bord de la couche de séparation et cette dernière dépasse le bord de la plaque positive. Le bord horizontal de la plaque positive dépasse le bord de la couche de séparation et cette dernière dépasse le bord de la plaque négative. On assemble la cellule en enroulant en spirale, sur un mandrin, une seule couche de séparation et les plaques positive et négative.

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