ALLOY FOR BATTERY GRIDS
A lead acid cell including a positive plate or grid has been discovered involving Pb/Ca/Sn/Ag alloy. An interaction between tin and silver which leads to optimum tin and silver levels which are substantially different than those indicated in the prior art. The described optimum tin and silver levels...
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Main Authors | , , , |
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Format | Patent |
Language | English French |
Published |
06.01.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | A lead acid cell including a positive plate or grid has been discovered involving Pb/Ca/Sn/Ag alloy. An interaction between tin and silver which leads to optimum tin and silver levels which are substantially different than those indicated in the prior art. The described optimum tin and silver levels results in a positive alloy with superior mechanical properties and improved corrosion resistance which leads to superior battery life in present day SLI applications. In a preferred manner, the alloy includes lead, tin in the range of about 0.8 % - 1.1 %, silver in the range greater than 0 to about 0.017 % with a tin to calcium ratio greater than about 12:1.
L'invention porte: sur des batteries au plomb comportant une plaque positive ou grille d'alliage de Pb, Ca, Sn, Ag; et sur une interaction entre l'étain et l'argent conduisant à des niveaux optimaux entre l'étain et l'argent différents de ceux indiqués dans les techniques antérieures. Lesdits niveaux optimaux donnent un alliage aux propriétés mécaniques élevées et d'une résistance à la corrosion améliorée assurant une longue durée de vie dans les applications SLI récentes. Dans l'exécution préférée, l'alliage comporte du plomb, entre 0,8 et 1,1 % d'étain, entre 0 et environ 0,017 % d'argent, le rapport étain/calcium étant supérieur à environ 12:1. |
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Bibliography: | Application Number: WO1999US13381 |