Compagnie Europeenne D'accumulateurs

Compagnie Europeene D'accumulateurs

Societe Anonyme Dite Compagnie Europeene D'accumulateurs

Gerard Dalibard

Nicole Viaud

Jean Bouix

Dominique Micheaux

Jean-Claude Viala

Kha M Pham

M'hamed El Morabit

A grid (10) for the plate of an electrical storage cell, eg. a lead-acid accumulator, comprises two orthogonal sets of conductive bars (7, 8) together with a current collector tab (9). The grid is made from a loosely-woven cloth comprising both bundles of conductive threads outlining the bars and the current collector of the plate, and bundles of non-conductive threads (6) serving to position said conductive threads relative to one another and to maintain them in position. Said bundles of conductive threads are embedded in a metal matrix comprising at least one of the metals in the group constituted by: lead, copper, cadmium, and nickel.

Fiber reinforced grid for a storage cell, and method of manufacturing it

The grain size and resistance to corrosion of lead-antimony alloys containing less than 4% of antimony and 0.005 to 0.1% copper, are improved by incorporating therein from 0.001 to 0.1% of a mixture of rare earths, preferably misch metal. The alloys may also contain up to 0.5% arsenic or up to 0.8% of tin.

Lead-antimony alloys for electrode supports for lead accumulators

Low antimony alloys of lead are used for casting electrode supports in lead accumulators. They include less than 4% antimony by weight to avoid various poisoning effects of antimony on the electrochemical processes involved. Such alloys tend to have grains of excessive size which can lead to brittle castings. To reduce the grain size the present invention includes an additive constituted by a rare earth or a mixture of rare earths, e.g. misch metal at between 0.001% and 1% by weight, and preferably at 0.2%. The invention also provides an electrode support cast from the alloy, an electrode including such a support and a lead acid battery including such electrodes.

Alloys for making electrode supports in lead accumulators

A maintenance-free lead storage battery comprises a container closed by a lid and containing an acid electrolyte together with a block of positive plates, negative plates and separators. The block of plates and separators is tightly packed in a case which is immersed in the electrolyte and which has openings in those of its walls which are in close contact with end ones of said plates.

Growing community of inventors

Sevres, France

Gerard Dalibard