Chloride Group Limited

Chloride Group Public Limited Company

Kenneth Peters

Barry Culpin

Kevin David Kearney

Frank Wilson

Sidney Fewster

James Chetwood Snook

Robin Gordon

Ian K Gibson

Gilbert Sands

Walter J King

A lead acid recombination cell of motive power type comprises a sealed container containing negative plates alternating with tubular positive plates comprising a plurality of parallel tubes of porous material which contain active material and along the interior of each of which a conductive spine extends. Adjacent plates are separated by compressible fibrous absorbent material and the cell contains substantially no free unabsorbed electrolyte whereby substantially all the electrolyte is absorbed in the plates and separator material.

Lead acid recombination cells

Electric storage batteries

There is disclosed a sealed lead acid button cell having a moulded acid resistant polymer case formed in two portions each portion having a central boss with a passage leading into the cell, and a metal plug located in the said passage, the inner end of the plug being electrically connected to the electrode located in that portion of the case, and a cap made of a metal harder than the metal of the said plug surrounding the central boss and squeezing it against the plug and the cap being electrically connected to the plug. The cap may thus be crimped around the boss or may be a force fit thereon. The case is provided with a pressure relief vent to allow gases to vent under service conditions.

There is disclosed an electrode structure for an electrochemical cell comprising a fibrous support made of organic polymeric material, which is 0.1 to 3 mm. thick, carrying a pattern of solid conductors extending over the surface of the porous support from a current take off region to regions spaced therefrom, and containing electrochemically active material deposited on the fibrous support, in contact with the conductors, in an amount of at least 0.1 grams/sq. cm/mm thickness in such a manner that electrical energy produced by the electrochemical reaction can be conducted out of the electrode. Also disclosed are methods and apparatus for making the structure.

A sealed lead acid cell is disclosed which has electrodes comprising metallic supports which minimize the evolution of hydrogen and resist deformation under their own weight, and which are separated by at least one layer of separator material, the capacity of the negative electrodes is arranged to be at least as great as the capacity of the positive electrodes, the thickness of the electrodes is less than 3mm, the thickness of the separator is in the range of 10% to 200% of the thickness of the electrodes, and the volume, E, of electrolyte in the cell in relation to the sum of the pore volume of the separators, X, and the pore volume of the positive and negative active materials, Y, is not greater than 2X + Y.

Lead acid cells and batteries

A sealed lead acid cell is disclosed which has electrodes comprising metallic supports which minimize the evolution of hydrogen and resist deformation under their own weight, and which are separated by at least one layer of separator material, the capacity of the negative electrodes is arranged to be at least as great as the capacity of the positive electrodes, the thickness of the electrodes is less than 3mm, the thickness of the separator is in the range of 10 to 200% of the thickness of the electrodes, and the volume, E, of electrolyte in the cell in relation to the sum of the pore volume of the separators, X, and the pore volume of the positive and negative active materials, Y, is not greater than 2X + Y.

Apparatus is disclosed for filling tubular battery plates with active material paste by extruding the paste into the tubes via feed tubes passing from an inlet end of an extrusion head to an outlet end arranged in a row. The plates are supported during the extrusion and the feed tubes proportioned so as to equalize the amount of paste fed into each individual tube.

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Worsley, United Kingdom

Kenneth Peters